Easy Bisquick Breakfast Casserole

This easy Bisquick Breakfast Casserole is just 6 ingredients and takes minutes to assemble. Great to make the night before with cheddar cheese and sausage, it's the perfect bake to serve to a crowd. Customize with your favorite veggies and cheeses.

Are you looking for a hassle-free breakfast option that's both hearty and delicious? Look no further than this 6-ingredient, easy Bisquick breakfast casserole! It combines the convenience of Bisquick mix with your morning favorites, sausage and eggs. Bonus, you can either make and bake it the day of or make it the night before for easier breakfast or brunch prep!

Whether you're feeding a crowd or meal-prepping for the week ahead, a this Bisquick Breakfast Casserole recipe is sure to please. A few more breakfasts I love to make for guests are my 4-ingredient Sausage Muffins, Tater Tot Egg Casserole, and Overnight Breakfast Casserole.

Why You'll Love this Recipe

• Versatility: This easy recipe is incredibly versatile. You can customize it to suit your tastes, adding your favorite ingredients like bell peppers, spinach, or mushrooms.
• Convenience & Simple Ingredients: The name says it all! You can prepare this casserole and bake it immediately or prepare it the night before. It has 6 simple ingredients.
• Feeds a Crowd: Planning a brunch or breakfast gathering? This tasty breakfast can easily be doubled or tripled to feed a large group, making it perfect for special occasions and one the whole family will love!
• Easy to Adjust Size: Want to feed a smaller family, simply cut the ingredients in half and bake in an 8x8" square baking dish.

Ingredients

Scroll Down for Ingredient Amounts Listed in the Recipe Card Below

• Bisquick Original Pancake & Baking Mix: Acts as a binding agent and helps create a dough-like consistency, giving structure to the casserole.
• Whole Milk or Half & Half: Contributes moisture to the casserole and, when combined with the eggs, creates a creamy, custard-like consistency. 
• Eggs: Large eggs are the binding agent in the casserole. When mixed with milk, they create a custard-like texture that holds the other ingredients together. 
• Breakfast Sausage: The star of the show, providing the main flavor and hearty, meaty texture of the casserole. Pork Sausage (Jimmy Dean Sausage) is our favorite.
• Onion: Adds flavor and depth. They also provide texture to the casserole.
• Shredded Cheddar Cheese Blend: Adds richness, creaminess, and a delightful cheesy flavor to the casserole. It melts beautifully and forms a golden crust on top.

Tools You'll Need

• 13"x9" Casserole Dish
• Meat Chopper
• Large Skillet
• Mixing Bowls
• Liquid Measuring Cups
• Measuring Cups and Spoons
• Cheese Grater
• Cutting Board

How to Make Bisquick Breakfast Casserole

1. Crumble and cook sausage in a large skillet until cooked through. Transfer to a paper towel lined plate.
2. Add Bisquick, milk, eggs, salt, and black pepper to a large bowl or container sealed tightly. Whisk or shake until well combined.

3. Grease a 13"x9" baking dish with butter or nonstick cooking spray. To the prepared baking dish, layer sausage, onion, and cheese. Pour the egg mixture evenly on top.

4. Either cover tightly with plastic wrap or aluminum foil and refrigerate over night or bake immediately. Next morning, allow the casserole to sit at room temperature for 15 minutes prior to baking. 
5. Bake uncovered in a preheated 400ºF oven for 35-40 minutes. Cool 5 minutes before serving. 

Expert Tips AND Variations

Feel free to get creative and tailor the casserole to suit your taste. Remember that while substitutions can accommodate dietary preferences, they may affect the final taste and texture of the casserole, so be prepared for some variations in flavor.

• Optional Garnishes: Salsa, sliced green onions, cilantro, parsley, or hot sauce are excellent garnishes!
• Customize with Your Favorites: Feel free to add your favorite ingredients to the casserole. Green pepper, red bell pepper, onions, mushrooms, spinach, and diced tomatoes are all excellent additions that can add color, flavor, and nutrition.
• Variety of Sausage: You can use different types of sausage, such as pork, turkey, or chicken sausage. Each type will bring its own unique flavor to the casserole.
• Cheese Choices: Experiment with different cheeses. Besides a sharp cheddar cheese blend, you can use Monterey Jack, Swiss, mozzarella, or a spicy cheese blend for a varied taste.
• Seasoning Options: Don't hesitate to get creative with seasonings. Add herbs like thyme, oregano, or basil for extra flavor. You can also experiment with a little spice like smoked paprika, cayenne, or red pepper flakes for some heat.
• Make it Vegetarian: If you prefer a vegetarian version, omit the sausage and add more vegetables or a plant-based sausage substitute.
• Plan for Toppings: Consider toppings like salsa, maple syrup, sour cream, or hot sauce to serve with the casserole for added flavor and customization.
• Homemade Bisquick Mix Substitution: Combine 1 cup all-purpose flour, ½ teaspoon baking powder, ¼ teaspoon salt, and 1 tablespoon grated cold butter.

Make Ahead & Storage

You can make the sausage egg casserole the night before, cover tightly, and refrigerate. Take it out of the refrigerator about 15 minutes before you bake it.

Once it's prepared, if you have leftovers, allow the casserole to cool completely to room temperature after baking. Cover tightly with plastic wrap, foil, or in an airtight container. Store in the refrigerator for 3-4 days.

If you want to freeze the baked casserole for longer storage, it can be stored in a freezer-safe container up to 3 months.

When you're ready to reheat a serving from the refrigerator, simply place it in the microwave for a minute or two until heated through. To reheat a slice from the freezer, thaw overnight in the refrigerator then reheat in the microwave or in a covered skillet.

What to Serve With Easy Breakfast Casserole

This delicious breakfast casserole can accompany so many of your favorite breakfast dishes or light lunch sides. We love to have it with a potato like these Crispy Home Fries. It's also excellent with whipping cream biscuits, hash browns, cranberry orange monkey bread, and coffee cake.

For a light brunch or lunch, we'll have it with a side salad, fresh fruit, fruit salad, club salad, or sweet potato salad.

Making this during the fall and winter months? These Pumpkin Cinnamon Rolls with Maple Cream Cheese Frosting would be a perfect sweet complement to this casserole!

Frequently Asked Questions

More Easy Breakfast Recipes

• Tater Tot Breakfast Casserole
• Bacon and Cheese Quiche
• Apple Pull Apart Bread
• Overnight Breakfast Casserole