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This easy breakfast casserole recipe featuring Hempler’s Ground Breakfast Sausage is cheesy and delicious! It’s perfect for breakfast, brunch, or dinner. It’s so quick and easy to make and will feed a crowd.

You have to love breakfast casseroles because they are easy to make, can be made in advance, and feed a crowd. Plus, the leftovers reheat well. This easy egg casserole filled with Hempler’s Ground Breakfast Sausage, cheese, breakfast potatoes, red pepper, and onion will leave your family & friends feeling full and nourished to face the day.

Meal-prep alert: This casserole can be made in advance. Pour the mixture into the pan and refrigerate for up to 24 hours. Bring to room temperature (approx. 30 minutes) and bake when ready to eat. You can also reheat the cooked casserole for meals later in the week.


1 lb. Hempler’s Ground Breakfast Sausage
1 small yellow onion, diced small
1 red bell pepper, diced small
12 large eggs
1 cup milk
1 tablespoon Dijon mustard
1 teaspoon salt
½ teaspoon pepper
1 (30-oz) package hash brown potatoes (diced or shredded)
2 cups shredded cheddar cheese divided

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Heat the oven to 350°F. Grease a 9x13 baking dish with nonstick cooking spray.

In a large skillet, brown the sausage over medium heat, breaking it up into small pieces with a wooden spoon, cooking over medium heat until it is fully cooked and no longer pink, 6-8 minutes. Transfer sausage with a slotted spoon to the 9x13 pan.

Drain the pan and sauté veggies for about 5 minutes, occasionally stirring, until softened. Transfer the vegetable mixture into the 9x13 pan with the sausage. 

Add the thawed diced potatoes and 1 ½ cups cheese to the 9x13 pan with the sausage and veggies. Toss gently until evenly combined.

In a separate bowl, beat the eggs, milk, dijon mustard, salt & pepper. Add the egg mixture to the potato mixture and gently combine. Smooth out the top of the casserole and sprinkle with the remaining cheese.

Cover with aluminum foil and bake for 40 minutes. Remove the aluminum foil and bake for 10-15 minutes until the top is golden and the eggs are firm. 

Let rest 10 minutes before cutting into squares and enjoying warm.