Delicious Make-Ahead Breakfast Casserole
This breakfast casserole recipe is perfect for feeding a crowd. Filled with eggs, cheese, and veggies, it’s hearty, delicious, and easy to make ahead!
Why You’ll Love This Recipe
This breakfast casserole is hearty and flavorful, filled with eggs, cheese, potatoes, and vegetables. Here’s why it’s a favorite:
- Make Ahead: Assemble the night before to bake fresh in the morning.
- Simple Preparation: Uses easy-to-find ingredients and minimal equipment.
- Customizable: Feel free to swap in your favorite cheeses or vegetables.
It’s perfect for holiday brunches or weekend mornings, and the leftovers reheat beautifully.
Ingredients for Breakfast Casserole
| Ingredient | Amount |
|---|---|
| Large Eggs | 12 |
| Milk | 1 cup |
| Sea Salt | 1¼ teaspoons |
| Extra-Virgin Olive Oil | 2 tablespoons |
| Medium Yellow Onion, chopped | ½ |
| Freshly Ground Black Pepper | to taste |
| Garlic Cloves, chopped | 2 |
| Red Bell Pepper, chopped | 1 |
| Green Bell Pepper, chopped | 1 |
| Fresh Spinach, chopped | 1 cup |
| Green Onions, chopped | 4 |
| Shredded Cheddar Cheese | 1½ cups |
How to Make Breakfast Casserole
Here’s a step-by-step guide:
- Roast the Potatoes: Cut into 1/4-inch cubes, toss with olive oil, salt, and pepper, and roast at 425°F for 20-25 minutes.
- Prepare the Egg Mixture: Whisk eggs, milk, and salt in a large bowl.
- Cook the Vegetables: Sauté onion, garlic, and bell peppers until soft; then add spinach until wilted.
- Assemble the Dish: Layer roasted potatoes, cheese, sautéed veggies, and pour the egg mixture on top.
- Bake: Bake at 350°F for 40-45 minutes until set. Let cool slightly before serving.
Make-Ahead Instructions
This casserole is excellent for prepping in advance:
- Assemble Overnight: Layer all ingredients in the dish, cover, and refrigerate overnight. Bake in the morning.
- Pre-Prep Ingredients: Roast potatoes and sauté vegetables a day ahead; refrigerate. Assemble in the morning.
Storing and Reheating Leftovers
Store leftovers in an airtight container in the refrigerator for up to 5 days. You can also freeze it for up to 3 months—thaw overnight before reheating.
What to Serve with Breakfast Casserole
Pair this delicious dish with fresh fruit or consider serving it alongside sweet pastries. For more brunch inspiration, check out 51 Best Brunch Recipes.
FAQs
Can I make this breakfast casserole vegetarian?
Yes! Simply omit the cheese or replace it with a vegan cheese substitute.
Can I use frozen vegetables in this casserole?
Absolutely! Just ensure they are thawed and drained before mixing them in.
How long does it take to cook a breakfast casserole?
It typically cooks for 40-45 minutes at 350°F.