Mini fish sandwiches with tartar sauce

My college roommate Sarah and I discovered these sliders during a Friday night when we were too broke for takeout but craving something that felt like a treat. We made them on a tiny dorm stove, burning the first batch because we got distracted by a movie, but the second batch changed everything. Now whenever I make them, I remember that crowded kitchen and the joy of turning simple ingredients into something that felt like fast food magic.

Last summer, I made these for a backyard party and watched them disappear in under ten minutes. My friend Mike who swears he hates fish went back for thirds, and now he texts me whenever he sees slider buns on sale at the grocery store.

Ingredients

• White fish fillets: Cod or haddock works beautifully here because they are mild and hold up perfectly to the crispy coating
• Panko breadcrumbs: These Japanese style crumbs create that shatteringly crunchy exterior that makes these so addictive
• Cornmeal: The optional secret weapon that adds an extra layer of crunch and reminds me of real coastal fish shack food
• Mayonnaise: Use a good quality mayo here since it is the base of your tartar sauce and quality really shines through
• Pickles and capers: These salty tangy elements transform ordinary mayo into something restaurant worthy
• Slider buns: Look for the smallest softest buns you can find because the bun to fish ratio matters

Instructions

Get your station ready:

Set up three shallow bowls with flour, beaten eggs, and the panko cornmeal mixture so you can move quickly and cleanly

Season the fish:

Pat your fish pieces dry and season them generously with salt and pepper on both sides before you start coating

Create the crunch:

Dredge each piece in flour, shake off the excess, dip in egg, then press firmly into the crumb mixture until fully coated

Cook to golden:

Fry in batches for 2 to 3 minutes per side until deep golden and cooked through, or bake at 400F for 10 to 12 minutes, flipping once

Whisk the magic sauce:

Mix mayo, chopped pickles, capers, lemon juice, Dijon, and fresh parsley in a small bowl and let it chill while the fish cooks

Build your sliders:

Toast those buns until lightly golden, layer fish, cheese, and lettuce, then finish with a generous dollop of that homemade tartar sauce

Pin It

These sliders have become my go to when friends come over for casual dinners because everyone feels like a kid again grabbing tiny sandwiches with their hands. The way the cheese melts into the warm fish and meets that cool tartar sauce is just perfect.

Making Them Ahead

You can coat the fish pieces up to four hours ahead and store them on a parchment lined baking sheet in the refrigerator. The tartar sauce actually gets better after a few hours in the fridge as the flavors meld together.

Oven vs Frying

Baking these at 400F on a rack over a baking sheet gives you almost the same crunch with way less mess. Just spray the coated fish lightly with oil spray before baking to help them golden up properly.

Serving Ideas

I love serving these with crispy oven fries or even sweet potato fries on the side. A simple coleslaw or some pickled vegetables add a nice bright contrast to the rich fish.

• Cut the fish pieces slightly smaller than your buns so everything nests perfectly together
• Have extra lemon wedges on hand for squeezing over the top
• These are best eaten immediately but the components hold up well for a couple hours

Pin It

There is something genuinely happy about food that is meant to be eaten with your hands. These sliders turn any ordinary Tuesday into something worth celebrating.

Recipe FAQs

→ What type of fish works best for these sliders?

White fish fillets like cod, haddock, or pollock work exceptionally well. Their mild flavor and firm texture hold up beautifully during frying while remaining tender inside. Thicker cuts prevent drying out during cooking.

→ Can I bake these instead of frying?

Absolutely. Bake at 200°C (400°F) for 10-12 minutes on a lined baking sheet, turning once halfway through. The crust won't be quite as crunchy, but you'll still get delicious results with less mess.

→ How far ahead can I prepare the tartar sauce?

The tartar sauce develops excellent flavor when made 1-2 days ahead. Store it covered in the refrigerator, and the flavors will meld beautifully. Give it a quick stir before assembling your sliders.

→ What sides pair well with fish sliders?

Crispy oven fries, sweet potato wedges, or a simple coleslaw complement these sliders perfectly. Lemon wedges add brightness, while pickles provide a tangy contrast to the rich fish and sauce.

→ How do I store and reheat leftovers?

Store assembled sliders in the refrigerator for up to 2 days, though the buns may soften. For best results, store components separately and reheat fish at 180°C (350°F) until warmed through. Avoid microwaving as it makes the crust soggy.