Name: Crispy Fish Croquettes for a Festive Flavor Adventure
Prep time: 30 min
Cook time: 15 min
Total time: 45 min
Ingredients: 1 can King Oscar’s Brisling Sardines in Zesty Tomato Sauce (Any King Oscar sardine can be substituted for variety.); 2 cups Cold Leftover Mashed Potatoes (Ensure they are cold for the best texture.); 1/2 cup Diced White Onion (Sautéed and cooled; can be replaced with shallots.); 1 rib Minced Celery (Optional for a smoother texture.); 2 TBSP Chopped Fresh Parsley (Cilantro can be a delightful substitute.); 2 TBSP Chopped Fresh Chives (More for garnish.); 1/4 tsp Kosher Salt (Sea salt is a lovely alternative.); 1/4 tsp Cracked Pepper (Omit if sensitive to spice.); 1 cup All-Purpose Flour (Gluten-free flour can be used for a gluten-free version.); 2 pieces Beaten Eggs (Flax eggs can replace eggs for an egg-free option.); 2 cups Panko Bread Crumbs (Regular breadcrumbs can be used for a denser crunch.); Oil for Frying (A high smoke point oil like avocado or regular olive oil.); Tangy Mustard Sauce (Perfectly complements crispy fish croquettes.)

The aroma of golden-fried goodness fills the kitchen as I unveil my latest obsession: Crispy Fish Croquettes with Tangy Mustard Sauce. These delightful bites are not just mouthwatering—they’re the kind of holiday appetizer that turns any gathering into a festive celebration. With a crunchy exterior and a flavorful blend of creamy mashed potatoes and King Oscar’s Brisling Sardines on the inside, they are deceptively simple yet utterly satisfying. Quick to prepare and perfect for either a cozy night at home or impressing guests, these croquettes elevate comfort food to a new level. Plus, they’re a fantastic way to make use of leftover mashed potatoes! Who wouldn’t want a scene-stealer like this on their holiday table? Are you ready to bring some crispy cheer to your next feast?

Why Are These Croquettes a Must-Try?

Irresistible Crunch: Bite into the crispy exterior, and you’ll discover a flavorful filling that’s pure comfort.
Sustainable Delight: Using leftover mashed potatoes is a fantastic way to reduce waste while creating something delicious.
Flavor Fusion: The rich taste of King Oscar’s Brisling Sardines in zesty tomato sauce pairs beautifully with creamy potatoes.
Crowd-Pleasing Appetizer: These croquettes are sure to impress at any gathering, making them a perfect holiday appetizer.
Versatile Options: Feel free to swap ingredients or add spices for a personalized twist—try mixing in some fresh herbs or even a hint of sriracha for a kick! Serve these with a tangy mustard dipping sauce, and you’ve got a show-stopping starter that everyone will love. If you enjoy comforting bites like these, check out my Crispy Oven Baked Chicken Thighs that are equally satisfying!

Crispy Fish Croquettes Ingredients

For the Croquettes
• King Oscar’s Brisling Sardines in Zesty Tomato Sauce – Adds rich flavor and moisture; any King Oscar sardine can be substituted for variety.
• Cold Leftover Mashed Potatoes (2 cups) – Serves as the primary binder; ensure they are cold for the best texture to hold the croquettes together.
• Diced White Onion (1/2 cup, sautéed and cooled) – Adds sweetness and depth; can be replaced with shallots for a milder, sweeter taste.
• Minced Celery (1 rib) – Provides crunch and freshness; optional if you prefer a smoother texture.
• Chopped Fresh Parsley (2 TBSP) – Enhances flavor with a fresh note; cilantro can be a delightful substitute for a different taste.
• Chopped Fresh Chives (2 TBSP + more for garnish) – Offers a subtle onion-like flavor; green onions can be a great alternative.
• Kosher Salt (1/4 tsp) – Enhances all flavors beautifully; sea salt is a lovely alternative to consider.
• Cracked Pepper (1/4 tsp) – Adds a mild heat; feel free to omit if you’re sensitive to spice.
• All-Purpose Flour (1 cup) – Utilized for breading; you can use gluten-free flour for a gluten-free version.
• Beaten Eggs (2) – Acts as a binding agent to secure the breading; flax eggs can replace eggs for an egg-free option.
• Panko Bread Crumbs (2 cups) – Provides a light, crispy coating; regular bread crumbs can be used for a denser crunch.
• Oil for Frying – A high smoke point oil like avocado or regular olive oil is recommended for frying to perfection.

For the Dipping Sauce
• Tangy Mustard Sauce – Perfectly complements crispy fish croquettes, adding a zesty kick and enhancing the overall flavor experience.

Step‑by‑Step Instructions for Crispy Fish Croquettes

Step 1: Sauté the Onions
In a medium skillet, heat a tablespoon of olive oil over medium heat. Add the diced white onion and sauté for about 5 minutes until translucent and fragrant. Once cooked, remove the onions from the heat and allow them to cool while you prepare the rest of the ingredients for the crispy fish croquettes.

Step 2: Heat the Oil
Fill a deep skillet or Dutch oven with oil to a depth of 1.5 to 2 inches, and heat it over medium-high heat. To determine if the oil is ready for frying, drop in a few breadcrumbs; they should immediately sizzle. This step is crucial for achieving the perfect golden crust on your crispy fish croquettes.

Step 3: Combine the Mixture
In a large mixing bowl, combine the cooled sautéed onions, 2 cups of cold leftover mashed potatoes, minced celery, chopped parsley, King Oscar’s Brisling sardines, chopped chives, kosher salt, and cracked pepper. Mix everything together gently until well combined, ensuring the ingredients are evenly distributed for the best flavor in every bite.

Step 4: Form the Croquettes
Take about a tablespoon of the fish mixture and shape it into a small ball or patty. Roll each croquette in all-purpose flour to coat it lightly, then dip it into the beaten egg to adhere. Finally, coat the croquette in panko bread crumbs, pressing gently to ensure an even crispy coating; repeat this process with the remaining mixture.

Step 5: Fry the Croquettes
Carefully drop the coated croquettes into the hot oil, making sure not to overcrowd the pan. Fry them for approximately 30 seconds or until they are golden brown, turning them as needed to ensure they cook evenly. The sizzling sound and golden hue indicate they are ready to come out of the oil.

Step 6: Drain and Garnish
Using a skimmer or tongs, carefully remove the fried croquettes and place them on a plate lined with paper towels to drain excess oil. Sprinkle additional chopped chives over the top for a fresh garnish while they are still hot, enhancing the visual appeal of your crispy fish croquettes.

Step 7: Serve with Sauce
Once drained, serve the crispy fish croquettes warm alongside a tangy mustard sauce for dipping. This delightful combination not only enhances the flavors but also offers that extra zest to elevate your holiday appetizer experience—perfect for impressing family and friends at your festive gatherings!

Expert Tips for Crispy Fish Croquettes

Oil Temperature: Test the oil’s readiness by dropping in a few breadcrumbs; if they sizzle immediately, it’s hot enough for frying your crispy fish croquettes.
Batch Frying: Fry your croquettes in small batches to avoid overcrowding the pan, which helps ensure an even golden crust on all sides.
Cool Mashed Potatoes: Make sure your leftover mashed potatoes are cold before mixing; this gives the croquettes better structure and prevents them from becoming mushy.
Panko Perfection: For an exceptionally crispy coating, use panko breadcrumbs. If you prefer a denser crunch, regular breadcrumbs can also work but may yield a different texture.
Season to Taste: Don’t forget to taste the mixture before forming the croquettes! Adjust seasoning by adding more salt and pepper as needed for optimal flavor.
Storage Tips: If you make extra croquettes, store them in an airtight container in the fridge for up to five days, making for a quick and delicious snack later on.

Crispy Fish Croquettes Variations & Substitutions

Feel free to explore these variations and make this recipe your own with bold flavors and delightful textures!

Protein Swap: Substitute smoked salmon or lump crab for a fresh seafood twist that’s equally delicious.
Imagine the smoky richness of salmon paired with creamy potatoes—it’s a match made in heaven!
Herb Infusion: Add fresh dill or tarragon for a herby kick that brightens the flavor profile of your croquettes.
These herbs can elevate the dish with a refreshing note that dances on your palate.
Spicy Kick: Mix in sriracha, jalapeños, or crushed red pepper flakes for a fiery bite that adds warmth and excitement.
Heat lovers will appreciate the added zing, making these croquettes truly unforgettable.
Dairy-Free Option: Use a non-dairy milk and plant-based butter in your mashed potatoes for a delicious vegan alternative.
You can still enjoy that comforting creaminess without any dairy!
Gluten-Free Recipe: Substitute all-purpose flour and panko breadcrumbs with gluten-free versions for a dish everyone can enjoy.
Your gluten-sensitive friends will thank you as they delight in these flavorful bites!
Cheesy Goodness: Fold in some crumbled feta or aged cheddar cheese into the mixture for a creamy, savory surprise.
The addition of cheese brings a whole new layer of richness that’s simply divine.
Vegetable Boost: Add finely grated zucchini or carrot to the mash to sneak in some extra veggies while keeping them deliciously moist.
It’s a great way to boost nutrition without compromising on flavor!

Be sure to pair these crispy delights with my delectable Coconut Lime Fish or the crunchy Crispy Baked Zucchini Chips Greek for a multi-dimensional feast your guests will love!

How to Store and Freeze Crispy Fish Croquettes

Fridge: Store leftover crispy fish croquettes in an airtight container for up to 5 days. They can be enjoyed cold or reheated to restore their crispy texture.

Freezer: For longer storage, freeze the uncooked croquettes on a baking sheet until solid, then transfer to a freezer-safe container. They can be frozen for up to 3 months.

Reheating: Reheat frozen croquettes directly from the freezer in a preheated oven at 375°F (190°C) for about 15-20 minutes, ensuring they become crispy again.

Preparation: If you’ve made extra crispy fish croquettes, simply thaw in the fridge overnight before frying or reheating for another round of deliciousness at your next gathering!

Make Ahead Options

These Crispy Fish Croquettes are perfect for meal prep enthusiasts! You can prepare the croquette mixture up to 24 hours in advance by combining the cooled sautéed onions, cold mashed potatoes, celery, parsley, sardines, chives, salt, and pepper in a large bowl. To maintain their quality, cover the bowl tightly with plastic wrap and refrigerate. When you’re ready to serve, simply shape the mixture into croquettes, coat them in flour, dip in beaten eggs, and roll in panko breadcrumbs. Fry them fresh for about 30 seconds until golden brown, ensuring you achieve that delicious crunch right before enjoying these delightful bites!

What to Serve with Crispy Fish Croquettes

These delightful bites not only shine on their own but are perfect for building a memorable meal.

Creamy Coleslaw: A refreshing contrast to the crispy texture of croquettes, the crunch of cabbage and a tangy dressing enhance every bite.
Zesty Potato Salad: This vibrant side dish complements the flavors of the fish, adding creaminess and a medley of herbs for freshness.

For a vibrant punch of flavor, try pairing the croquettes with a lemon-dill potato salad. The bright acidity will uplift the dish and provide a delightful balance to the rich fish filling.

Garlicky Roasted Asparagus: Tender asparagus with a hint of garlic and lemon creates a lovely balance of flavors and textures with the croquettes.
Classic Tartare Sauce: This creamy accompaniment, with its capers and pickles, adds a tangy kick that beautifully complements the fish.

Imagine dipping your crispy croquette into the zesty tartare, where each bite bursts with flavor and bright notes. This contrasts nicely with the savory filling.

Sparkling Wine: A glass of bubbly not only elevates the meal but refreshes your palate between bites, making the dining experience brighter.
Cheesy Garlic Bread: Golden, buttery slices that are gooey and crispy will bring a comforting contrast, making for a homey meal that’s hard to resist.

Indulge in a delightful dessert like a light lemon sorbet afterward to cleanse the palate and round off your festive meal. Each pairing enhances the crispy fish croquettes, making every gathering a celebration of flavor and comfort!

Crispy Fish Croquettes Recipe FAQs

How do I select the best sardines for making croquettes?
Absolutely! For these crispy fish croquettes, I recommend using King Oscar’s Brisling Sardines in Zesty Tomato Sauce for their rich flavor and moisture. If you’re looking for a different taste or happen to have another type of canned sardine, feel free to substitute them; just ensure they’re boneless and packed in a sauce or oil to maintain that delightful moisture.

How should I store leftover crispy fish croquettes?
Very! For the freshest taste, store any leftover croquettes in an airtight container in the fridge for up to 5 days. You can enjoy them cold, or if you want that crispy texture back, simply reheat them in the oven at 375°F (190°C) for about 10 to 15 minutes until warmed through.

Can I freeze crispy fish croquettes?
Absolutely! If you’re looking to make your preparation easier, you can freeze uncooked croquettes. Place them on a baking sheet in a single layer and freeze until solid, then transfer them to a freezer-safe container or bag. They can be frozen for up to 3 months. When you’re ready to enjoy them, just fry them straight from the freezer without thawing.

What if my croquettes fall apart while frying?
Oh, that can happen, but don’t worry! If your crispy fish croquettes fall apart, it could be due to the mixture being too wet or if the oil wasn’t hot enough. To fix this, mix a little more flour or panko into the mixture to help bind it better. Make sure the oil is heated properly—test it by dropping in a breadcrumb; if it sizzles right away, you’re good to go.

Are these croquettes suitable for people with dietary restrictions?
Yes, for the most part! This recipe can be easily adapted for different dietary needs. If someone has wheat allergies, substitute all-purpose flour with gluten-free flour and use gluten-free panko. For a vegan option, you can use flax eggs instead of traditional eggs and leave out the sardines completely or replace them with mashed beans or lentils for protein.

Can my pet eat the crispy fish croquettes?
While the ingredients are safe for pets, it’s best to avoid sharing these crispy fish croquettes with them. The seasoned components, especially salt and onions, can be harmful to dogs and cats. Instead, feel free to prepare a plain version with some cooked potatoes and fish without seasoning for your furry friends!