Breakfast Biscuit Bubble Up Casserole: Your Ultimate Easy Morning Delight
Start your day the delicious way with our Breakfast Biscuit Bubble Up Casserole! This incredibly easy-to-make breakfast bake is a true crowd-pleaser, featuring a delightful medley of savory crumbled sausage, gooey melted cheese, fluffy scrambled eggs, and tender, puffy biscuit pieces. Perfect for a leisurely weekend brunch, a festive holiday gathering, or even a quick weekday meal prep, this casserole is designed for convenience without compromising on flavor.

Breakfast casseroles hold a special place in my heart, especially when the holidays roll around. They offer the comforting warmth of a home-cooked meal with the added benefit of being largely prep-ahead, freeing up your precious morning hours. This particular casserole can be assembled the night before, making your morning routine incredibly smooth. Then, it simply requires 35 to 45 minutes in the oven to transform into a golden, bubbly masterpiece.
What Exactly is a Bubble Up Casserole?
A “bubble up” casserole gets its unique name from its star ingredient: refrigerated biscuits. These ready-to-bake biscuits are cut into smaller pieces and then mixed with the other delicious components of the casserole. As the dish bakes in the oven, the biscuit pieces miraculously puff up and “bubble up” around the other ingredients, creating a wonderfully light, airy, and slightly crispy texture. This method ensures that every bite offers a perfect balance of savory fillings and soft, bread-like goodness, making it far more exciting than a traditional egg-only casserole. It’s a fantastic way to add an extra dimension of texture and flavor that your family and friends will absolutely adore.
Why This Breakfast Casserole is a Must-Try
- Effortless Preparation: From sautéing the sausage to assembling the layers, each step is straightforward and requires minimal culinary expertise. It’s an ideal recipe for both novice and experienced cooks.
- Ultimate Customization: This recipe is incredibly adaptable! Don’t like bell peppers? Swap them for mushrooms or spinach. Prefer bacon over sausage? Go for it! The possibilities are endless, allowing you to tailor it to your family’s preferences.
- Crowd-Pleasing Perfection: Whether you’re feeding a small family or a large gathering, this casserole scales beautifully and is guaranteed to be a hit. Its hearty nature and delightful flavors appeal to all ages.
- Make-Ahead Convenience: The option to prepare it the night before is a game-changer, especially for busy mornings or holiday feasts. Wake up, pop it in the oven, and enjoy a stress-free breakfast.
- Comfort Food at Its Best: There’s something inherently comforting about a warm, savory breakfast casserole. This dish delivers warmth, satisfaction, and a taste of home in every forkful.
Endless Customization Options for Your Perfect Casserole
One of the best features of this Breakfast Biscuit Bubble Up Casserole is its incredible versatility. Feel free to unleash your creativity and tailor it to your personal taste or what you have on hand. Here are some ideas:
- Vegetable Swaps: Not a fan of onion or bell pepper? Simply leave them out! Or, introduce other vegetables like sliced mushrooms, diced zucchini, fresh spinach (wilt it before adding), or even roasted sweet potato cubes for added flavor and nutrition.
- Protein Alternatives: While breakfast sausage is a classic choice, feel free to experiment. Diced ham, crumbled crispy bacon, or even vegetarian sausage crumbles can be excellent substitutes. For a lighter option, cooked, shredded chicken could also work.
- Cheese Varieties: The recipe calls for shredded cheddar or Colby Jack, which melt beautifully. However, you can mix and match to create your favorite blend. Try mozzarella for a stretchier melt, Parmesan for a sharper bite, Monterey Jack for extra creaminess, or a spicy pepper jack for a kick.
- Spice Level: If you enjoy a bit of heat, easily transform this dish into a spicy delight. Use “Hot” breakfast sausage, or simply mix in 1/2 to 1 teaspoon of crushed red pepper flakes with the egg mixture. A dash of hot sauce like Tabasco or Sriracha added to individual servings also works wonderfully.
- Herb Infusion: Add a sprinkle of fresh or dried herbs to the egg mixture for an extra layer of flavor. Chives, parsley, oregano, or a touch of sage pair well with breakfast flavors.

Expert Tips for the Perfect Bake
Achieving the perfect Breakfast Biscuit Bubble Up is simple with a few helpful pointers:
- Ensure Even Cooking: To make sure the casserole is fully cooked through, especially in the center, gently insert a knife or a fork into the thickest part. If it comes out clean and the eggs are set, it’s ready. If the top starts browning too quickly before the center is cooked, loosely cover the dish with aluminum foil for the remainder of the baking time. This prevents over-browning while allowing the inside to finish cooking.
- Don’t Overcrowd: While the biscuits will expand, ensure they are scattered relatively evenly without being too tightly packed. This allows them to bubble up properly and cook through.
- Season Well: Don’t underestimate the power of salt and pepper. Taste your sausage mixture before combining with other ingredients and adjust seasoning if needed.
- Preheat Oven: Always preheat your oven fully. This ensures the casserole starts cooking immediately and bakes evenly.
- Cool Slightly Before Slicing: Letting the casserole rest for 5-10 minutes after removing it from the oven allows it to set slightly, making it easier to cut into neat portions.
Make Ahead for Ultimate Convenience
This casserole is a dream come true for meal planners! Its make-ahead capabilities mean you can enjoy a delicious, hot breakfast without the morning rush. Here are two fantastic options:
- Assemble the Entire Casserole Ahead: You can fully assemble the casserole, from layering the biscuits to pouring the egg mixture, the night before. Cover it tightly with plastic wrap and refrigerate. When ready to bake, simply remove it from the fridge while the oven preheats. Keep in mind that a cold casserole will likely require an additional 10-15 minutes of baking time to cook through completely.
- Prep Components in Advance: If you prefer to bake it fresh, you can still save significant time by preparing the individual components the day before. Cook the sausage, onion, and bell peppers until browned, then allow them to cool completely. Store the cooked mixture in an airtight container in the refrigerator. In the morning, all you’ll need to do is cut the biscuits, whisk the eggs, and assemble, drastically shortening your prep time.
Storage and Reheating
Leftovers of this delightful casserole are just as tasty as the fresh bake! Ensure any remaining portions are stored in an airtight container in the refrigerator. They will keep well for 3 to 4 days. To reheat, you have a couple of easy options:
- Microwave: For individual servings, a quick zap in the microwave for 1-2 minutes, or until heated through, works perfectly.
- Toaster Oven/Conventional Oven: For a crispier texture or larger portions, reheat in a toaster oven or conventional oven at 300-325°F (150-160°C) until warmed through. Covering it loosely with foil can prevent it from drying out.

More Irresistible Breakfast Casseroles to Try
If you’ve fallen in love with the ease and deliciousness of this Breakfast Biscuit Bubble Up Casserole, you’re in for a treat! There’s a whole world of breakfast casseroles waiting to be explored. Here are some more fantastic recipes that promise to make your mornings brighter and your brunches more memorable:
- Loaded Tater Tot Breakfast Casserole
- Cheesy Grits Casserole with Smoked Sausage
- Overnight Sausage and Caramelized Onion Breakfast Casserole
- Everything Bagel Breakfast Casserole
- Sausage and Cheese English Muffin Casserole
Breakfast Biscuit Bubble Up Recipe
An easy to make breakfast casserole full of crumbled sausage, cheese, eggs, and fluffy biscuit pieces, perfect for any occasion.
Prep Time: 15 mins
Cook Time: 35-45 mins
Servings: 8

Ingredients
- 1 pound breakfast sausage
- 1/2 cup diced onion
- 1/2 cup diced bell pepper
- 1 large can refrigerated biscuits (approximately 16 oz or 8 biscuits)
- 2 cups shredded cheddar or Colby Jack cheese
- 6 large eggs
- 1 cup milk
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
Instructions
- Preheat your oven to 350 degrees F (175 degrees C). Lightly spray a 9×13-inch baking dish with cooking spray to prevent sticking.
- In a large nonstick skillet, heat over medium-high heat. Add the breakfast sausage and break it apart with a wooden spoon, cooking until browned. Drain any excess grease.
- Add the diced onion and bell pepper to the skillet with the sausage. Continue to cook for another 5-7 minutes, or until the vegetables have softened. Remove from heat and set aside.
- Open the can of refrigerated biscuits and cut each biscuit into 4 equal pieces. Scatter these biscuit pieces evenly across the bottom of the prepared baking dish.
- Evenly scatter the cooked sausage and vegetable mixture on top of the biscuit pieces in the baking dish.
- Sprinkle the shredded cheese generously over the sausage and biscuit layers.
- In a medium bowl, whisk together the large eggs, milk, salt, and black pepper until well combined. Pour this egg mixture evenly over all the ingredients in the baking dish, ensuring it saturates the biscuits and fillings.
- Bake for 35 to 45 minutes, or until the casserole is golden brown on top, the eggs are fully set, and the biscuit pieces are cooked through and bubbly. If the top begins to brown too quickly, loosely cover the dish with aluminum foil.
- Remove from oven and let stand for 5-10 minutes before slicing and serving. This allows the casserole to set slightly, making for cleaner cuts.
Recipe Notes
For those who love a bit of a kick, use “Hot” breakfast sausage and consider adding a pinch of crushed red pepper flakes to the egg mixture. This will elevate the spice level wonderfully without overwhelming the dish.
Nutrition Information (Approximate per serving): Calories: 576 kcal.
Nutrition information is automatically calculated and should only be used as an approximation. Actual values may vary based on ingredients and preparation methods.
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