These Sheet Pan Crispy Flounder Sliders are a lighter, oven-baked twist on the classic fish sandwich. Tender flounder fillets are roasted with bold Old Bay seasoning, then layered on buttery toasted brioche buns with a crisp Jalapeño Apple Slaw and a creamy High-Protein Old Bay Crema. Perfect for an easy weeknight dinner, game day, or summer gathering.
⏱️ Prep & Cook Time
Prep Time: 15 minutes
Cook Time: 12 minutes
Total Time: 27 minutes
Servings: 4 sliders
🛒 Ingredients
The Sheet Pan Flounder
- 4 flounder fillets (4–5 oz each)
- 2 tbsp olive oil
- 1 tsp Old Bay seasoning
- 1/2 tsp garlic powder
- 1/2 tsp smoked paprika
- Salt and freshly ground black pepper, to taste
The Jalapeño Apple Slaw
- 1 cup shredded green cabbage
- 1/2 apple, julienned
- 1 jalapeño, thinly sliced
- 2 tbsp apple cider vinegar
- 1 tsp honey
- Pinch of salt
The High-Protein Old Bay Crema
- 1/2 cup 0% Greek yogurt
- 2 tbsp mayonnaise
- 1 tsp Old Bay seasoning
- Juice of 1/2 lemon
- 1 tsp hot sauce
The Assembly
- 4 brioche slider buns, toasted
- Butter, for toasting the buns
👩🍳 How to Make It
1. Prepare the Sheet Pan
Preheat the oven to 425°F (220°C) and line a baking sheet with parchment paper.
2. Roast the Flounder
Pat the flounder fillets dry with paper towels. Brush both sides with olive oil, then season evenly with Old Bay seasoning, garlic powder, smoked paprika, salt, and black pepper.
Arrange the fillets on the prepared baking sheet and roast for 10–12 minutes, or until the fish flakes easily with a fork and the edges are lightly crisp and golden.
3. Make the Jalapeño Apple Slaw
While the fish bakes, combine the shredded cabbage, julienned apple, sliced jalapeño, apple cider vinegar, honey, and a pinch of salt in a bowl. Toss until evenly coated and let the slaw rest for a few minutes to develop its bright, tangy flavor.
4. Prepare the High-Protein Old Bay Crema
In a small bowl, whisk together the Greek yogurt, mayonnaise, Old Bay seasoning, fresh lemon juice, and hot sauce until smooth, creamy, and well blended.
5. Toast and Assemble
Butter the cut sides of the brioche slider buns and toast them in a skillet until golden brown. Spread a generous layer of the Old Bay crema on both halves of each bun. Add a roasted flounder fillet, then pile the jalapeño apple slaw on top.
6. Serve Immediately
Serve the sliders while the fish is hot and the buns are warm. Pair with baked fries, potato chips, or a crisp green salad for a complete meal.
🥗 Nutrition (Per Slider)
Calories: Approximately 410 kcal
Protein: Approximately 29g
