Heat the oven to 400°F (204°C). Using a teaspoon, mix all the ingredients for the Dynamite Sauce and set aside.: When you open the oven it should already be hot and steady, which encourages the top to brown and the edges to bubble without steaming the seafood. You will notice a dry, warm wave of air when the oven is fully preheated, and that steady heat helps create a gentle convective flow that crisps the topping if you use cheese . A common pitfall is rushing the preheat, which can leave the dish underbrowned and watery in the center; always wait until the oven signals it has reached temperature.
Pat the baby shrimp, bay scallops, crab meat, clams, and sliced button mushrooms dry with paper towels. Add half of the Dynamite Sauce to the seafood and stir to coat well.: The sauce should feel creamy and cohesive on your spoon, with specks of masago distributed throughout. Smell for a gentle tang and mild heat from the sriracha , which indicates balance. If the sauce separates, stir briskly to re-emulsify, and avoid over-thinning with additional liquids because the bake needs that body to cling to the seafood.
Transfer the seafood into an oven-safe dish or container (you can also use aluminum foil or a large clam shell). Top the seafood with the remaining Dynamite Sauce. Drizzle some shredded or grated cheese on top (optional). Bake for 25-30 minutes, or until the Seafood Dynamite is slightly browned. Dish out and serve hot.: Drying these elements yields better texture and prevents the baking dish from steaming. You will feel the surface go from slick to matte, and the paper towel will collect excess moisture. A frequent mistake is rinsing right before assembly, which can reintroduce water; instead, drain well and pat dry over a bowl to catch liquid.
Add half of the Dynamite Sauce to the seafood and stir to coat well: As you stir, the seafood's surfaces should develop a glossy sheen from the sauce, and the aroma of lime and sriracha will become more pronounced. This step ensures that internal morsels carry flavor, not just the top layer. Avoid overmixing vigorously, which can break up delicate scallop and crab pieces.
Transfer the seafood into an oven-safe dish or container (you can also use aluminum foil or a large clam shell): Arrange the seafood in an even layer so heat penetrates uniformly, and leave a little space at the edges for bubbling. The visual cue I use is that the solids should sit level without overcrowding, which helps the top brown pleasingly. Crowding is a common error that results in uneven cooking and a soggy texture.
Top the seafood with the remaining Dynamite Sauce: Spoon the reserved sauce across the surface so it forms pockets of creaminess that will caramelize slightly in the oven. You should be able to see glossy islands of sauce dotting the seafood. If you spread too thinly, the top will not develop a satisfying crust, so keep some sauce volume.
Drizzle some shredded or grated cheese on top (optional): If you use cheese , the surface will develop a golden, lightly crisped layer that contrasts with the creamy interior. Listen for the soft sizzle when the dish first hits the heat if your oven has a fan, and watch for a bubbly sheen. Overloading with cheese can mask the seafood flavors, so apply lightly if you want balance.
Bake for 25 to 30 minutes, or until the Seafood Dynamite is slightly browned: During baking, the kitchen fills with a toasted, savory scent and the sauce will thicken around the edges. Look for gentle bubbling and a faint golden color on top, those are the signs the bake is done. Beware of leaving it too long, which can dry out delicate seafood and toughen scallop and shrimp .
Dish out and serve hot: Serve immediately so the textures remain distinct, with the top still slightly crisp and the interior creamy. As it cools the sauce firms, so serve right away for contrast between warm crust and soft filling. A typical mistake is letting it sit too long in the dish, which causes the crust to soften and the overall experience to flatten.