The Best Bisquick Breakfast Casserole - Little Sunny Kitchen (2024)

Make breakfast for a crowd with this easy recipe for Bisquick Breakfast Casserole!

It’s so simple to throw together and bakes up hot, melty, and ready to serve. Plus, it’s packed with cheese, eggs, sausage, and potatoes, so it will make everyone full and happy all day long.

Grab a box of Bisquick baking mix, and get ready to make the easiest and most delicious breakfast casserole ever!

I’m not exactly sure who the mastermind is who created the concept of the Bisquick Breakfast Casserole, but I’m certainly thankful that she or he did! There are lots of other Bisquick breakfast recipes out there, but this is by far my favorite.

This cheesy egg casserole features a blend of biscuit dough, egg seasoned with sauteed peppers, onions, and sausage, hearty hash brown potatoes, and of course, a browned cheddar cheese topping.

If you like hearty casserole recipes, be sure to check out my version of John Wayne Casserole next. It’s a dinner recipe made with refrigerated biscuits, ground beef, and Tex-Mex flavors.

Why Use Bisquick Mix?

Bisquick is a shortcut ingredient, used by home cooks everywhere to make simple recipes.

The ready-made baking mix is a combination of flour, fat, leavening, and salt, which means that you can make fluffy biscuits – or breakfast casserole – without the need to add butter or measure out salt and baking powder. It makes the process quicker!

Why You’ll Love This Recipe

1. So Easy to Make –Take a few minutes to brown the meat, then mix everything together and bake. It’s nearly impossible to mess this recipe up.
2. Traditional Flavors –Sausage, egg, and cheese are for more than just breakfast sandwiches! This combination is classic breakfast comfort food.
3. Can be Made Ahead – Need to save time in the morning? Do the cooking the night before, and just throw your Bisquick casserole in the oven when you wake up. Because of this, breakfast casserole is perfect for Christmas or Easter brunch!

Ingredients In Bisquick Breakfast casserole

Here’s what you need to make this filling breakfast or brunch recipe:

Complete list of ingredients and amounts can be found in the recipe card below.

• Breakfast Sausage: Look for uncooked bulk breakfast sausage. We’ll brown it with diced bell peppers and onions before mixing it in with the other ingredients.
• Eggs: You only need 4 large eggs to hold all of the other ingredients together.
• Bisquick: This kitchen staple is great for making pancakes and biscuits, but it works in this recipe to change the texture of the eggs, making the casserole rich and hearty.
• Frozen Hash Browns: Use shredded frozen potatoes rather than cubed ones. There’s no need to thaw the hash browns first, but you can if you want to.
• Cheese: Shredded cheddar cheese is perfect, but you can use any type of melty cheese that you like, or have sitting in your fridge. Try cheddar jack, mozzarella, or a blend of cheeses.
• Milk: To moisten the Bisquick and give the casserole a smooth, yummy texture.

How To Make The Best Bisquick Breakfast Casserole

1. Mix up the Eggs: Preheat the oven to 400˚F/200°C, and lightly grease a 9×13-inch baking dish. In a large bowl, whisk together the Bisquick mix, half of the shredded cheese, hashbrowns, eggs, milk, and salt and pepper to taste. Set aside.

1. Brown the Sausage: Heat a large skillet over medium heat and cook the breakfast sausage, peppers, and onion until the sausage is fully cooked and the vegetables are tender.
2. Combine: Add the cooked mixture to the egg mixture and stir to combine. Pour this mixture into the prepared baking dish.
3. Bake: Top with the remaining cheese, and bake for 30-35 minutes, or until the center of the casserole is set.

Recipe Tips

• Make it Extra Simple: Leave out the peppers and onions, and replace them with an extra cup of hashbrowns. This version might be more appealing to children too!
• Or Add Extra Ingredients: Try sauteed mushrooms, spinach, or any other veggies that you like. For a bit of spice, mix in hot sauce, cayenne powder, sliced jalapeños, or diced green chilis.
• Instead of sausage, make this with cooked bacon, diced ham, or deli turkey.
• Double or Halve the Recipe: To double this recipe, I suggest making it in two separate 9×13-inch dishes. To make a half-size version, use an 8×8-inch or smaller baking pan instead. The cook time should stay the same.
• Make Individual Servings by baking Bisquick breakfast casserole in a muffin tin. I like to use a silicone muffin mold to make them super easy to remove! Mini breakfast casseroles are great for potlucks or for breakfast on the go. Fill each cavity ¾ full and bake for 15-20 minutes.
• Make it the Night Before: You can prepare the casserole and store it in the refrigerator until morning. Then just bake as directed! If you prefer, bake the casserole the day before, then reheat it when you’re ready to serve it.
• Freshly Grated Cheese can make this recipe extra delicious. When you grate your own cheese from a block, you’ll save money, and avoid any additives that might be in the pre-grated stuff.
• Breakfast casserole is fully cooked when it reaches a temperature of 160°F/71°F in the center. Use a kitchen thermometer to check.

Storing Tips

Enjoy your breakfast casserole hot from the oven, or keep leftovers in the fridge for up to 5 days.

Reheat individual servings as needed using the microwave.

To freeze breakfast casserole, wrap the entire baked casserole well and freeze it for up to 2 months. Thaw in the fridge overnight before warming in the oven at 350°F/175°C for 20 minutes.

You can also freeze individual servings. Thaw overnight in the refrigerator and reheat in the oven or the microwave for a quick, hearty breakfast on busy mornings.

What To Serve With Bisquick Breakfast Casserole

Try lighter side dishes like fresh fruit salad or healthy breakfast smoothies along with this filling casserole.

Make sure to have coffee, and maybe some coffee cake too!

If you’re looking for more ways to make breakfast for your crew, and super easy, be sure to grab my sheet pan eggs recipe, or my favorite homemade waffles recipe.

For brunch, check out how I make a simple and beautiful smoked salmon platter to share!

FAQs

A hearty breakfast casserole filled with sausage, eggs, potatoes, and cheese will be loved by everyone you serve it to! Be sure to pin this recipe so you’re ready to make it the next time you’re hosting brunch or breakfast.