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Breakfast · Part 2 of 3: Instructions

Easy Cowboy Breakfast Casserole with Sausage and Peppers Step-by-step instructions

A golden, bubbling Cowboy Breakfast Casserole in a white ceramic dish on a light granite counter.
Prep
Cook
Total
Serves
8
Includes 5 min resting

Before you start

Before beginning, ensure all ingredients are ready and the oven is preheated to 375°F. Dice the potatoes and peppers uniformly to ensure they cook evenly.

If the breakfast sausage is not already cooked, brown it in a skillet and drain the excess fat before adding it to the casserole. Having all components measured and prepared allows for a smooth assembly process and ensures the best final texture for the dish.

Ingredients at a glance (5)
  • 4 cups diced potatoes
  • 1 cup diced red and green peppers
  • 1 lb cooked crumbled breakfast sausage
  • 8 large beaten eggs
  • 2 cups shredded pepper jack cheese

Instructions

Layering the base

  1. Prepare the base
    In a large 9x13 inch ceramic baking dish, spread the diced potatoes evenly across the bottom. Scatter the diced red and green peppers over the potatoes, then top with the cooked crumbled breakfast sausage, ensuring a balanced distribution of ingredients throughout the dish.
    Look for The dish is filled with an even layer of potatoes, peppers, and crumbled sausage.
    Tip Ensure the potatoes are cut into small, uniform cubes to guarantee they cook through completely while in the oven.

At the end of this phase, the baking dish should be neatly filled with a base of potatoes, followed by an even layer of peppers and sausage.

Check that the ingredients are distributed evenly across the bottom of the dish to ensure every serving has a balanced mix of flavors and textures. The dish is now ready for the liquid components.

Adding the eggs and cheese

  1. Add eggs and cheese
    Pour the beaten eggs evenly over the potato and sausage mixture until the ingredients are just covered. Sprinkle the shredded pepper jack cheese generously over the top of the egg mixture to create an even, cheesy layer.
    Look for The eggs cover the solids and the cheese forms a full layer on top.
    Tip Whisk the eggs thoroughly in a bowl before pouring to ensure a smooth, uniform texture once the casserole is baked.

The casserole should now look uniform, with the beaten eggs filling the gaps between the potatoes and sausage. The cheese is spread across the top, ready to melt. Verify that the egg mixture has reached the edges of the dish and that the cheese is evenly distributed for a consistent golden crust during the baking process.

Baking to perfection

  1. Bake until golden
    Place the baking dish into a preheated 375°F oven and bake until the edges are golden brown and bubbling. To cook the eggs through to a safe internal temperature of 160°F (71°C), continue baking until the center is firm. Let the casserole rest for five minutes after removing it from the oven to allow the layers to settle, making it easier to slice neatly.
    Look for The casserole is golden brown, bubbling, and firm to the touch.
    Safe temperature 160°F (71°C) internal temperature (egg dishes)
    Tip Let the casserole rest for five minutes after removing it from the oven to allow the layers to settle, making it easier to slice neatly.

Once finished, the casserole will have a firm, set center and a beautiful golden-brown top. The edges should be bubbling, and the aroma of the sausage and cheese will be prominent. Ensure the internal temperature has reached 160°F (71°C) and let the dish rest for at least five minutes before slicing into neat squares for serving.

Common mistakes

A common mistake is cutting the potatoes too large, which prevents them from softening properly and results in hard, undercooked chunks. Another error is failing to ensure the eggs are fully set; always check the internal temperature to confirm safety.

Avoid overcrowding the dish with too many ingredients, as this can prevent the eggs from binding the mixture together effectively, leading to a casserole that falls apart when served. Finally, do not skip the resting time, as it is crucial for slicing.

How to tell it’s done

The casserole is done when the eggs are completely set and no longer appear liquid in the center. The surface should be golden brown, and the cheese should be bubbling across the entire top.

A knife inserted into the center should come out clean, and the internal temperature of the egg mixture must reach 160°F (71°C) for food safety. Allow the dish to rest for five minutes after baking to ensure clean, neat slices.

  • Ground meat: 160°F (71°C) in the thickest part
  • Egg dishes: 160°F (71°C) in the thickest part

Coming up in Part 3: common questions

  • Can this casserole be made ahead of time?
  • How can the potatoes be ensured to cook through?
  • What is the best way to reheat leftovers?

Also in Part 3: variations (Vegetarian Option, Spicy Kick), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)