This egg bake casserole recipe makes a hearty, beginner-friendly breakfast with fluffy baked eggs, crisp bacon, colorful bell peppers, onion, garlic, and plenty of cheddar cheese. It comes together in one 9×13-inch dish and is ideal for weekend brunch, family breakfasts, or simple meal prep.
When you need a breakfast that feels substantial without requiring constant attention at the stove, this casserole is a dependable choice. The bacon and vegetables are cooked first, so every bite has a savory base and the peppers become tender before they ever reach the oven.
Cheddar melts throughout the seasoned eggs while the red and green peppers add color and a little sweetness. Once assembled, the casserole needs only about 25 to 30 minutes in the oven, making it especially convenient when you are feeding several people at once.
Letting the finished egg bake rest briefly before slicing also makes serving much easier. You get neat portions that can go straight onto breakfast plates alongside toast, potatoes, fruit, or other brunch favorites.
Egg Bake Casserole Ingredients
You only need a short list of familiar breakfast ingredients for this savory casserole.
- Large eggs: Twelve eggs create the main structure of the casserole and fill a standard 9×13-inch baking dish.
- Bacon: Six ounces of diced bacon provide smoky, savory flavor and a crisp contrast to the tender eggs.
- Red bell pepper: Adds sweetness, bright color, and tender pieces of vegetables throughout the casserole.
- Green bell pepper: Balances the sweeter red pepper with a slightly more savory, fresh flavor.
- White onion: Finely chopped onion builds a flavorful base and becomes soft as it cooks with the bacon.
- Garlic: A small amount of freshly minced garlic gives the bacon and vegetables extra depth.
- Cheddar cheese: Shredded medium cheddar melts evenly through the eggs and adds a rich, savory finish.
- Sea salt: Seasons the eggs without overwhelming the flavor of the bacon and cheese.
- Black pepper: Adds mild warmth and rounds out the seasoning.
Helpful Tips
- Cool the bacon mixture slightly. Adding a very hot skillet mixture directly to raw eggs can begin cooking them unevenly. Give the bacon and vegetables a few minutes to cool before combining everything.
- Cook the vegetables until tender. The casserole spends less than half an hour in the oven, so soften the peppers and onion properly in the skillet first.
- Check the center before removing it. The edges often set before the middle. Look at the center of the casserole and make sure the eggs are fully set rather than wet or visibly liquid.
Cooking Steps
STEP 1: Heat your oven to 350°F. Lightly grease a 9×13-inch baking dish so the baked eggs release cleanly when you portion the casserole.
STEP 2: Place the diced bacon in a large skillet over medium heat. Cook just until the bacon begins to soften and release some of its fat. Stir in the minced garlic and finely chopped onion, then continue cooking until the bacon starts developing color and the onion softens.
STEP 3: Add the diced red and green bell peppers to the skillet. Cover and cook for about 5 to 10 minutes, stirring from time to time. The peppers should become tender and the bacon should finish browning. Remove the skillet from the heat and let the mixture cool slightly.
STEP 4: Crack the twelve eggs into a medium or large mixing bowl. Whisk until the yolks and whites are completely combined. Season with the sea salt and black pepper, then whisk briefly again to distribute the seasoning.
STEP 5: Stir the cooled bacon, onion, garlic, and bell pepper mixture into the beaten eggs. Fold in the shredded cheddar, making sure the vegetables, bacon, and cheese are spread evenly through the mixture.
STEP 6: Pour everything into the prepared baking dish and gently spread the filling into an even layer. Bake for 25 to 30 minutes, until the center is set and the surface has developed a light golden color.
STEP 7: Remove the egg casserole from the oven and leave it in the baking dish for about 5 minutes. This short rest helps the eggs settle and makes the casserole easier to cut into clean portions. Serve while warm.
Serving Ideas for Egg Bake Casserole
Because this casserole already contains eggs, bacon, cheese, and vegetables, it does not need much alongside it. A few simple sides can turn it into a complete breakfast or brunch spread.
Breakfast potatoes are a natural pairing when you want a filling meal. Crisp roasted potatoes or skillet potatoes contrast nicely with the softer texture of the baked eggs.
Toast or toasted English muffins make an uncomplicated side and are especially useful for a quick weekday breakfast. Serve them warm with butter alongside a square of casserole.
Fresh fruit adds something cool and light to the plate. Berries, melon, grapes, or sliced oranges work well when the casserole is part of a larger brunch.
Can I prepare this egg casserole ahead of time?
Yes. You can cook the bacon and vegetables in advance and refrigerate them once cooled. When you are ready to bake, whisk the eggs, combine them with the prepared filling and cheese, and transfer everything to your baking dish.
If you assemble the entire casserole in advance, keep it covered and refrigerated. Because it will be colder when it enters the oven, it may need a few additional minutes to cook completely through the center.
How do I know when an egg bake is finished?
The casserole is ready when the center is set and no longer looks wet. The surface should be lightly golden, and the eggs should feel firm but still tender when gently pressed.
Avoid judging doneness only by the browned edges, since they usually cook more quickly than the center of a large baking dish.
Can I use pre-cooked bacon?
Pre-cooked bacon can work, but you will still want to sauté the onion, garlic, and bell peppers before adding them to the eggs. Cooking the vegetables first removes excess moisture and gives them a softer texture in the finished casserole.
If your bacon is already very crisp, stir it into the vegetable mixture near the end rather than cooking it for the full skillet time.
Why is my egg casserole watery?
Excess moisture often comes from vegetables that have not been cooked long enough before baking. Bell peppers and onions release liquid as they heat, which is why this recipe softens them in the skillet before they are mixed with the eggs.
Allowing the casserole to rest for five minutes after baking also helps the texture settle before you slice it.
Storage & Reheating
Allow leftover egg bake casserole to cool before transferring portions to an airtight container. Refrigerate it for up to 3 to 4 days. Keeping individual slices separate can make busy-morning reheating especially convenient.
For longer storage, freeze fully cooled portions in freezer-safe containers or wrap individual slices well before freezing. For the best texture, use frozen portions within about 2 months. Thaw them overnight in the refrigerator before reheating whenever possible.
To reheat a single serving, warm it in the microwave in short intervals until heated through. For several portions, place them in a baking dish, cover loosely, and warm in a moderate oven until the centers are hot.
Try not to overheat the casserole, since prolonged reheating can make baked eggs firmer and drier. Gentle reheating keeps the cheddar melted and the eggs pleasantly tender while making leftovers just as practical for breakfast the next day.
Egg Bake Casserole Recipe
Ingredients
- 12 large eggs
- 1 cup red bell pepper cut into small dice
- 6 oz bacon diced and cooked until browned and crisp
- ½ teaspoon sea salt
- 1 cup grated cheddar cheese preferably medium cheddar
- 1 teaspoon freshly minced garlic
- ¼ teaspoon black pepper preferably freshly ground
- 1 cup green bell pepper diced
- 1 cup white onion finely chopped, approximately 1 medium onion
Instructions
- Heat the oven to 350°F. Lightly grease a 9×13-inch baking dish, then set it aside.
- Place the diced bacon in a large skillet over medium heat and cook until it begins to soften.
- Add the minced garlic and finely chopped onion. Continue cooking until the bacon starts to brown.
- Stir in the diced red and green bell peppers. Cover the skillet and cook for 5–10 minutes, stirring occasionally, until the peppers are tender and the bacon is browned. Remove the skillet from the heat and allow the mixture to cool.
- Crack the eggs into a medium mixing bowl and whisk until evenly blended.
- Add the sea salt and black pepper, then whisk again until the seasonings are thoroughly incorporated.
- After the bacon and vegetable mixture has cooled, stir it into the beaten eggs until evenly distributed.
- Fold the shredded cheddar into the egg, bacon, and vegetable mixture, mixing until the cheese is dispersed throughout.
- Transfer the mixture to the prepared 9×13-inch baking dish and spread it into an even layer.
- Place the casserole in the preheated oven and bake for 25–30 minutes, or until the top is set and lightly browned.
- Remove the baking dish from the oven and allow the casserole to rest for 5 minutes before serving warm.