Corn and Tomato Casserole
Fresh Corn and Tomato Casserole is an easy, family-friendly baked dish featuring sweet corn kernels, ripe tomatoes, onions, garlic, herbs, creamy cheese, and a crispy breadcrumb topping. The combination of juicy vegetables and rich cheesy goodness creates a comforting casserole that's perfect for weeknight dinners, holiday meals, or potlucks. Ready in under an hour, this versatile recipe can be served as a side dish or vegetarian main course and is an excellent way to enjoy fresh summer produce.
Ingredients
For the Casserole
- 4 cups fresh corn kernels (about 5–6 ears of corn)
- 3 large ripe tomatoes, diced
- 1 medium onion, finely chopped
- 3 garlic cloves, minced
- 1 cup shredded mozzarella cheese
- ½ cup grated Parmesan cheese
- ½ cup sour cream
- 2 tablespoons butter
- 2 tablespoons olive oil
- ½ teaspoon salt
- ½ teaspoon black pepper
- 1 teaspoon dried oregano
- 1 teaspoon fresh thyme leaves
- 2 tablespoons chopped fresh parsley
For the Topping
- ¾ cup panko breadcrumbs
- 2 tablespoons melted butter
- 2 tablespoons grated Parmesan cheese
- 1 tablespoon chopped parsley
Instructions
- Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter or cooking spray.
- Heat olive oil and butter in a skillet over medium heat. Sauté the chopped onion for about 4 minutes until softened. Add the garlic and cook for another minute until fragrant.
- Stir in the fresh corn kernels and cook for 3–4 minutes. Fold in the diced tomatoes, oregano, thyme, salt, and pepper. Cook briefly, then remove from the heat.
- Transfer the vegetable mixture to a large bowl. Add the sour cream, mozzarella cheese, half of the Parmesan cheese, and chopped parsley. Mix until well combined.
- Spread the mixture evenly into the prepared casserole dish.
- Combine the panko breadcrumbs, melted butter, remaining Parmesan cheese, and parsley. Sprinkle evenly over the casserole.
- Bake for 30–35 minutes, or until the topping is golden brown and the casserole is bubbling around the edges.
- Allow the casserole to rest for 5–10 minutes before serving. Garnish with additional parsley if desired.
Notes
- Fresh corn provides the sweetest flavor and best texture.
- Drain overly juicy tomatoes to prevent excess liquid.
- Fresh herbs add brighter flavor than dried herbs.
- Mozzarella creates a creamy, stretchy texture.
- Parmesan adds a rich savory flavor.
- Panko breadcrumbs stay crisp after baking.
- Let the casserole rest before serving for easier slicing.
- Leftovers refrigerate well for up to 3 days.