Gluten Free Creamy Dill Shrimp Casserole Recipe

Creamy Dill Shrimp Casserole is a long-time family favorite — rich, comforting, and versatile enough for a weeknight dinner or a special gathering. The bright freshness of dill and lemon balances the creamy sauce, making the dish both elegant and approachable. This recipe is naturally adaptable: serve it over pasta, rice, or your preferred grain, and add vegetables for extra color and nutrition.

I enjoy browsing a handful of cookbooks when I plan a meal: reading techniques, comparing ingredients, then setting the books aside and trusting my instincts to combine the best ideas. Sometimes I experiment and fail, but more often a new favorite emerges. This casserole began as a mashup of a few recipes I love — the result is simple, flavorful, and reliable.

Shrimp are an excellent lean protein, packed with vitamins and minerals. They thaw and cook quickly, and when paired with a creamy dill sauce they become the star of a satisfying casserole. To boost the vegetable content, stir in lightly steamed asparagus, broccoli, peas, carrots, or chopped green beans before baking. The sauce helps reluctant eaters enjoy more vegetables.

When shopping for shrimp, look for firm flesh and a fresh, slightly briny scent. Avoid any that give off an ammonia smell or show discolored spots. Frozen shrimp can be just as good as fresh if they have been handled properly — avoid packages with ice crystals or signs of freezer burn. Defrost frozen shrimp overnight in the refrigerator or, if short on time, keep them sealed and submerge the bag in cold water until thawed. Do not soak shrimp in water, which will dilute their flavor.

If you prefer a lighter version of this casserole, use low-fat evaporated milk or a lower-fat milk in place of half and half, and substitute part of the butter with a neutral oil such as olive or canola. Choosing whole grains like brown rice adds fiber and nutrients while keeping the dish satisfying with smaller portions.

This casserole is economical and quick to prepare, yet feels indulgent — a real crowd-pleaser. I hope it becomes a regular on your menu. If you try it, please leave a rating or a note in the comments to share how it turned out.

Ingredients needed for Creamy Dill Shrimp Casserole:

• 1-1/2 cups half and half (or half milk and half heavy cream)
• 5 tbsp butter, divided
• 3 tbsp gluten-free all-purpose flour blend or regular all-purpose flour
• 2 tbsp very finely minced shallots
• 2 green onions, finely chopped (separate whites and greens)
• 3/4 cup dry white wine, dry vermouth, or dry sherry
• 2 tsp finely minced fresh dill (or 1 tsp dried)
• 1 tsp freshly squeezed lemon juice
• Sriracha or other gluten-free hot sauce, to taste (optional)
• 1 (12 oz; 340g) jar roasted red bell peppers, drained and cut into thin strips
• 2 lb (907g) medium raw shrimp, shelled and deveined
• 6 cups lightly cooked pasta, brown rice, or other whole grain (will finish cooking in the oven)
• Fresh dill sprigs for garnish

PRO Tip:

Cooking flour with a fat creates a roux. Whisking heated milk into that roux yields a smooth white sauce (béchamel), the classic foundation for many creamy dishes.

How to make Creamy Dill Shrimp Casserole:

1. Lightly butter a 9×13-inch (23x33cm) baking dish. Par-cook the pasta or grain so it is slightly underdone and stays firm after baking. Keep warm.
2. Warm the half and half in a saucepan until just below a simmer, watching carefully so it does not scorch.
3. In a skillet, melt 3 tablespoons of butter over medium heat. Whisk in the flour to form a smooth paste. Gradually add the hot half and half, whisking constantly until the sauce is smooth and thickened. Season lightly with salt and pepper and keep warm over low heat.
4. Preheat the oven to 375°F (191°C).
5. In the same skillet, melt the remaining 2 tablespoons of butter and sauté the shallots and the white parts of the green onions until softened, about 2 minutes. Add the green parts of the onions and the wine, cooking briefly to concentrate the flavor. Stir in the dill and lemon juice, then whisk this mixture into the white sauce. Add hot sauce if you like a little heat.
6. Stir in the roasted pepper strips, shrimp, and the partially cooked pasta or grains until everything is evenly coated. Transfer to the prepared baking dish.
7. Bake uncovered for about 20–25 minutes, until the casserole is bubbling at the edges and the shrimp are pink, opaque, and curled. Garnish with fresh dill and serve immediately.

PRO Tip:

Choose the pasta shape or grain you prefer. Long pasta such as fettuccine or spaghetti works beautifully, but rice or other whole grains are equally good. Partially cook so the starch finishes in the oven. For gluten-free versions, use certified gluten-free products and follow package instructions for cooking times.

Recommended Tools:

• Chef’s knife
• Paring knife
• Kitchen scale
• 9×13-inch (23x33cm) baking dish
• Nonstick saucepan
• Skillet
• Large mixing bowl

Gluten-Free Tips:

To adapt this recipe to gluten-free baking or thickening, use a reliable gluten-free all-purpose flour blend and weigh dry ingredients for best results. A kitchen scale and grams yield the most consistent measurements. If your flour blend does not thicken the sauce sufficiently, dissolve 1 teaspoon cornstarch in 1 tablespoon cold water and whisk it into the sauce, bringing it to a gentle simmer until thickened.

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