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Best-Ever Veggie Breakfast Casserole: Easy, Homemade, Delicious
This veggie breakfast casserole is a simple, satisfying way to start the day with eggs, colorful vegetables, melted cheese, and optional bread in every bite. It comes together in one dish and makes a warm, comforting breakfast that is easy to share.
Quick Overview
- Prep time: Not provided
- Cook time: 30–35 minutes
- Total time: Not provided
- Servings: Not provided
Why Make This Recipe
- Simple preparation: Mix the ingredients in one bowl, pour them into a baking dish, and let the oven do the work.
- Full of vegetables: Bell peppers, onions, spinach, or your favorite diced vegetables add color, flavor, and texture.
- Cheesy and satisfying: Shredded cheddar or mozzarella melts into the eggs for a rich, savory casserole.
- Great for sharing: This dish works well for a relaxed weekend breakfast, brunch, or an easy make-ahead meal.
Ingredients
- 6 large eggs
- 1 cup milk
- 2 cups diced vegetables (e.g., bell peppers, onions, spinach)
- 1 cup shredded cheese (e.g., cheddar or mozzarella)
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 tablespoon olive oil
- 1 cup cubed bread (optional)
How to Make It
Preheat the oven to 375°F (190°C). Allow the oven to reach the correct temperature before baking so the casserole cooks evenly.
In a large bowl, whisk together eggs and milk. Continue whisking until the mixture is smooth and the eggs and milk are well combined.
Add in the diced vegetables, cheese, salt, pepper, garlic powder, and onion powder, and mix until well combined. Stir gently so the vegetables and seasonings are distributed throughout the egg mixture.
If using, fold in the cubed bread. Mix carefully to help the bread absorb some of the egg mixture without breaking it apart.
Grease a baking dish with olive oil and pour the mixture into it. Spread the mixture evenly in the dish for consistent baking.
Bake in the preheated oven for 30-35 minutes, or until the eggs are set and the top is golden brown. The center should no longer look liquid, and the top should have a lightly golden finish.
Let it cool for a few minutes before slicing and serving. This brief cooling time helps the casserole set and makes it easier to portion.
How to Serve It
- Serve warm with fresh fruit, such as berries, melon, or sliced oranges.
- Add a simple green salad or roasted potatoes for a more filling brunch.
- Garnish with extra shredded cheese, chopped fresh herbs, or a little hot sauce.
How to Store It
Let leftover casserole cool, then place it in an airtight container and refrigerate it. Reheat individual portions gently in the microwave or warm them in the oven until heated through.
For longer storage, freeze cooled portions in freezer-safe containers or tightly wrapped pieces. Thaw frozen portions in the refrigerator before reheating. Reheating gently helps prevent the eggs from becoming overly firm or dry.
Helpful Tips
- Dice the vegetables into similarly sized pieces so they cook and distribute evenly throughout the casserole.
- Do not overbake. Remove the casserole when the eggs are set and the top is golden brown to help preserve its tender texture.
- Let the casserole cool for a few minutes before cutting so the slices hold together more neatly.
Optional Variations
- Use cheddar for a sharper flavor or mozzarella for a milder, stretchier finish.
- Add different vegetables, such as mushrooms, tomatoes, zucchini, or broccoli, while keeping the total amount of diced vegetables at 2 cups.
- Leave out the bread for a lighter, egg-and-vegetable casserole, or include it for a heartier texture.
Frequently Asked Questions
Can I make this casserole without the bread?
Yes. The cubed bread is optional, so you can leave it out and bake the egg, vegetable, and cheese mixture as directed.
What vegetables work well in this casserole?
Bell peppers, onions, and spinach are suggested, but other diced vegetables can also work well. Cut them into small, evenly sized pieces.
How do I know when the casserole is done?
It is ready when the eggs are set in the center and the top is golden brown. Bake it for 30–35 minutes as directed.
Can I use cheddar and mozzarella together?
Yes. Combining cheeses can give the casserole both a sharper flavor and a softer, meltier texture.
Can I prepare leftovers ahead of time?
Yes. Store cooled leftovers in the refrigerator or freezer, then reheat gently until warmed through.
Veggie Breakfast Casserole
This veggie breakfast casserole is a simple, satisfying way to start your day with eggs, colorful vegetables, melted cheese, and optional bread. It's a warm, comforting breakfast that's perfect for sharing.
Ingredients
Base Ingredients
- 6 large large eggs
- 1 cup milk
- 2 cups diced vegetables (e.g., bell peppers, onions, spinach) Can use your favorite vegetables.
- 1 cup shredded cheese (e.g., cheddar or mozzarella) Choose according to personal preference.
Seasonings
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 tablespoon olive oil For greasing the baking dish.
Optional Ingredients
- 1 cup cubed bread Optional for a heartier texture.
Instructions
Preparation
- Preheat the oven to 375°F (190°C).
- In a large bowl, whisk together eggs and milk until smooth.
- Add the diced vegetables, cheese, salt, pepper, garlic powder, and onion powder, and mix until well combined.
- If using, fold in the cubed bread gently.
- Grease a baking dish with olive oil and pour the mixture into it, spreading evenly.
Baking
- Bake in the preheated oven for 30-35 minutes, or until the eggs are set and the top is golden brown.
- Let it cool for a few minutes, then slice and serve.
Notes
Serve warm with fresh fruit or a salad. Store leftovers in an airtight container in the refrigerator.
