One-Pan Corn Chowder Casserole
Turn leftover corn chowder into a hearty one-pan casserole with Italian sausage, summer vegetables, cooked pasta or rice, and a buttery crouton-Parmesan topping. It’s an easy, comforting meal that tastes brand new—perfect for using up what’s in the fridge without sacrificing flavor.
Prep Time 15 minutes mins
Cook Time 25 minutes mins
- 3 cups leftover corn chowder
- 1 pound Italian sausage (mild or hot, casings removed)
- 1 zucchini, diced
- 1 pepper, diced
- 1 onion, diced
- 2 cloves of garlic minced
- 1 - 1½ cups cooked pasta or rice (elbows, shells, penne, or white rice)
- 1 cup shredded mozzarella cheese
- 1 cup breadcrumbs (use homemade croutons, pulsed in a food processor, if needed)
- 1 tbsp melted butter (for topping)
- 1/4 cup shredded Parmesan cheese
- 1 tsp Italian seasoning or Copycat Good Seasons Mix
- 1/4 tsp kosher salt
- 1/4 tsp pepper
Preheat oven to 375°F.Brown the sausageIn a 10-inch or larger cast iron skillet, cook the Italian sausage over medium heat until browned and fully cooked, breaking it into crumbles as it cooks. Remove with a slotted spoon and set aside.Sauté the vegetablesIn the same skillet, sauté the zucchini, pepper, and onion for 5–7 minutes until just tender. Add the garlic and cook for 1 more minute. Season with salt, pepper, and Italian seasoning (or Good Seasons mix).Assemble the casseroleTurn off the heat. Stir in the cooked sausage, 3 cups of leftover corn chowder, cooked pasta or rice, and mozzarella cheese. Mix everything thoroughly in the skillet.Make the toppingIn a small bowl, combine ¾ cup coarse breadcrumbs (pulse homemade croutons if needed) with 1 tablespoon of melted butter. Toss to coat.Top and bakeSprinkle the buttery breadcrumbs evenly over the casserole, then top with shredded Parmesan cheese.If using a cast iron or oven-safe skillet, place it directly in the oven.If not, transfer the mixture to a greased baking dish before adding the topping.Bake uncovered for 20–25 minutes, until hot and bubbly with a golden topping.For extra crispiness, broil for 1–2 minutes at the end—watch closely!ServeLet the casserole rest for 5 minutes before serving. Garnish with fresh parsley, basil, or a pinch of chili flakes if desired.