Easy fish sticks casserole is a practical back-to-school dinner made with frozen fish sticks, condensed cream soup, milk, frozen vegetables, and shredded cheddar cheese. Arrange the fish sticks in a lightly greased 9 x 13-inch baking dish, add the creamy soup mixture and vegetables, top with cheese, and bake uncovered at 350°F for 30–35 minutes.
This cozy fish casserole serves about six people and takes approximately 10 minutes to prepare, making it a dependable meal for busy weeknights. The fish sticks stay tender inside, the cheese melts into a golden topping, and the creamy sauce brings everything together in one bubbling dish.
Jump to RecipeWhy You’ll Love This Recipe
Back-to-school evenings often call for food that is fast, filling, and easy to put on the table. This fish sticks casserole checks all three boxes without requiring a cutting board full of ingredients or a separate stovetop side dish.
Frozen fish sticks provide a familiar, kid-friendly base, while condensed soup creates a creamy sauce with almost no effort. Frozen peas or mixed vegetables add color and substance, and cheddar cheese supplies the savory, bubbly finish everyone looks forward to.
The entire meal bakes in one 9 x 13-inch dish and makes about six servings. For another comforting dinner idea, browse these budget-friendly casserole recipes when planning a week of easy meals.
Ingredients You’ll Need
The ingredient list is short, affordable, and easy to keep on hand for unexpected busy nights. Use the following amounts for the full-size casserole.
- Frozen fish sticks: One package weighing about 24 ounces. Keep the fish sticks frozen until they go into the baking dish.
- Condensed soup: One 10.5–10.75-ounce can of cream of mushroom or cream of celery soup.
- Milk: One-half cup, which loosens the condensed soup into a pourable sauce.
- Frozen vegetables: One 12–16-ounce package of peas or mixed vegetables.
- Cheddar cheese: One cup shredded for a creamy, golden topping.
Cream of celery gives the casserole a slightly lighter, savory flavor, while cream of mushroom makes it taste richer and earthier. Either choice works well, so select the can your family enjoys most.
If you have extra fish on hand, you can also try these crispy cod fish sticks for a different dinner option.
How to Make It Step-by-Step
Step 1: Heat the oven to 350°F and lightly grease a 9 x 13-inch baking dish. A thin coating of cooking spray or oil helps with serving and makes cleanup easier after the creamy sauce bubbles around the edges.
Step 2: Arrange the frozen fish sticks in the prepared dish, keeping them in a mostly even layer. Do not thaw the fish sticks first, because starting from frozen helps them retain their shape as the casserole cooks.
Step 3: Add the condensed cream of mushroom or cream of celery soup to a medium bowl and pour in the milk. Stir until the mixture is smooth and uniform, with no thick pockets of undiluted soup remaining.
Step 4: Pour or spread the soup mixture over the fish sticks. Try to distribute it across the dish so each portion gets some of the creamy sauce, but do not worry if a few fish stick tops remain visible.
Step 5: Scatter the frozen peas or mixed vegetables over the sauce in an even layer. There is no need to thaw the vegetables first; they will warm through while the casserole bakes.
Step 6: Sprinkle one cup of shredded cheddar cheese over the vegetables. Covering the surface evenly helps create a golden, melty topping instead of isolated patches of cheese.
Step 7: Bake the casserole uncovered for 30–35 minutes. It is ready when the dish is hot and bubbling, the cheese is melted, and the fish sticks are cooked through.
Step 8: Remove the casserole from the oven and let it stand for about 5 minutes before serving. This brief rest allows the sauce to settle slightly and makes it easier to spoon neat portions onto plates.
Pro Tips for the Best Fish Sticks Casserole
The most important tip is to keep the fish sticks frozen until baking. Thawed fish sticks can become softer and may lose their shape in the creamy sauce, while frozen pieces hold together better during the cooking time.
For a crispier topping, bake the fish sticks alone in the prepared dish for 8–10 minutes before adding the soup mixture and vegetables. Continue with the cheese and finish baking until the casserole is hot, bubbling, and cooked through.
You may also finish the casserole under the broiler for 1–2 minutes to deepen the color of the cheddar. Watch it closely during this step because cheese can move from golden to burnt quickly under direct heat.
- Use freshly shredded cheddar when possible for a smooth melt.
- Spread the vegetables evenly so every serving contains some color and texture.
- Let the casserole rest before scooping to reduce runny sauce around the edges.
- Place the baking dish on a sturdy sheet pan if you are concerned about bubbling sauce spilling in the oven.
Serving Ideas for a Family Dinner
This casserole already includes fish, vegetables, sauce, and cheese, so it can stand on its own as a complete dinner. Serve it with a simple green salad, sliced cucumbers, or fresh fruit for a cool contrast to the warm, creamy bake.
A spoonful of tartar sauce or a squeeze of lemon at the table adds brightness without changing the casserole itself. For a bigger comfort-food spread, pair it with a vegetable side such as this squash and zucchini casserole.
Keep portions generous but practical, since the sauce makes the fish sticks especially satisfying. A warm dinner roll can also help catch every bit of the creamy mixture left on the plate.
Storage and Reheating
Let leftovers cool briefly, then cover the baking dish or transfer the portions to airtight containers. Refrigerate leftovers promptly and enjoy them reheated until hot throughout.
For the best texture, reheat individual portions in the oven or toaster oven when time allows, since dry heat helps the cheese topping regain some of its pleasant texture. A microwave also works for quick lunches, although the fish stick coating may be softer.
Because this recipe uses a full 24-ounce package of fish sticks, a 9 x 13-inch baking dish is the right size for the listed quantities. If using a smaller 16-ounce package, use a smaller baking dish and reduce the vegetable and sauce quantities slightly rather than spreading the casserole thinly in the large pan.
For another family-friendly casserole with a crisp topping, take a look at this cheesy Alfredo tater tot casserole.
Easy Fish Sticks Casserole
Ingredients
Method
- Heat the oven to 350°F and lightly grease a 9 x 13-inch baking dish.
- Arrange the frozen fish sticks in a single layer in the prepared baking dish. Do not thaw them first.
- Stir the condensed soup and milk together in a bowl until smooth, then spread or pour the mixture over the fish sticks.
- Scatter the frozen peas or mixed vegetables over the soup mixture and sprinkle the shredded cheddar evenly over the top.
- Bake the casserole uncovered for 30–35 minutes, until hot and bubbling, the cheese is melted, and the fish sticks are cooked through.
- Let the casserole stand for about 5 minutes before serving.
Notes
Final Thoughts
Easy fish sticks casserole is exactly the kind of dinner that makes a hectic school night feel manageable. With frozen fish sticks, a creamy soup sauce, vegetables, and cheddar cheese, you get a warm one-dish meal with about 10 minutes of preparation and 30–35 minutes in the oven.
Keep the fish sticks frozen, use the broiler carefully if you want extra color, and give the casserole five minutes to rest before serving. Once your family enjoys this simple combination, it is likely to become a dependable part of your weeknight dinner rotation.
Finish the meal with a simple dessert such as this easy strawberry cake for a cheerful back-to-school dinner everyone can enjoy.