Oven-Baked Vegetable Frittata with Cheese

A versatile egg dish combining whisked eggs with bell peppers, onions, spinach, and melted cheese, started on the stovetop and finished in the oven. Perfect for brunch, light dinners, or using up leftover vegetables. The technique creates a fluffy, golden frittata that's creamy in the center with slightly crispy edges. Easily customizable with different vegetables, cheeses, or herbs to suit your taste preferences.
Ingredients
- 6 eggs
- ¼ cup milk
- 1 cup cheese, shredded (cheddar, mozzarella, or your choice)
- 1 bell pepper, diced
- 1 onion, diced
- 1 cup spinach, fresh or frozen
- salt and pepper
Instructions
- 1
Preheat oven to 375°F
- 2
Whisk eggs and milk in mixing bowl
- 3
Stir in cheese, bell pepper, onion, spinach, salt and pepper
- 4
Heat oven-safe skillet over medium heat and lightly grease
- 5
Pour egg mixture into skillet and cook until edges start to set
- 6
Transfer skillet to oven and bake for 15-20 minutes until fully set and golden
- 7
Remove from oven and let cool slightly before slicing and serving
Tips
Use an oven-safe skillet like cast iron or stainless steel to ensure smooth stovetop-to-oven transfer
Let edges set on stovetop before transferring to prevent runny centers
Cool slightly before slicing to help frittata hold its shape when serving
Good to Know
Refrigerate covered for up to 3 days
Can be made 1 day ahead and reheated gently
Serve warm or at room temperature, cut into wedges
Common Mistakes
Use oven-safe skillet to avoid melting handles
Don't skip stovetop cooking to avoid soggy bottom
Let cool slightly to avoid crumbling when slicing
Substitutions
FAQ
Can I make this without an oven-safe skillet?
Transfer mixture to a greased baking dish after initial stovetop cooking, though texture may be slightly different.
What if I don't have fresh spinach?
Frozen spinach works well but thaw and drain excess water first to prevent a watery frittata.
How long will leftovers keep?
Refrigerate covered for up to 3 days and reheat gently in microwave or low oven.