This Sausage and Potatoes Breakfast Casserole combines sweet Italian sausage with tender peppers and potatoes. It's baked with plenty of gooey cheese, creating a scrumptious and hearty dish the whole family will love.

Jump to:

• ❤️ Why You'll Love This Loaded Breakfast Casserole
• 🛒 Ingredients for Breakfast Casserole
• 🔪 How to Make Breakfast Casserole with Sausage and Potatoes
• 💡 Tips for Making Easy Sausage and Potatoes Breakfast Casserole
• ☑️ Storage Instructions
• 🍴 What to Serve with Breakfast Casserole with Potatoes and Sausage
• 🔄 Substitutions and Additions
• Can I Make This Potato Sausage Breakfast Casserole Dairy-free?
• Can I Use Frozen Vegetables in this Casserole?
• Why is My Casserole Not Setting up in the Middle?
• Can I Make This Casserole in Individual Servings?
• 🍽️ More Healthy Breakfast Recipes

❤️ Why You'll Love This Loaded Breakfast Casserole

• Loaded with sweet Italian sausage and peppers
• Creamy Yukon gold potatoes
• Baked with flavorful cheddar cheese
• Hearty, filling and satisfying
• Great breakfast meal prep recipe

This breakfast casserole is made with all the best ingredients and is guaranteed to make a delicious start to your day. It's got fluffy eggs, tender chunks of potatoes, savory sausage, gooey cheese, and colorful bell peppers and onions. It’s easy to whip together and ideal for when you need to serve a crowd.

The great thing about this recipe is that it's such a hearty and filling dish that it can not only be served for breakfast, but it's also perfect for lunch or dinner. Plus, this is one of those casseroles that you can prepare in advance for those times when you need a bit of a morning shortcut.

This rich and delicious casserole proves that morning breakfasts do not have to be boring. Another wonderful hearty breakfast or brunch dish that's always a hit is this Smoked Salmon Frittata.

🛒 Ingredients for Breakfast Casserole

• Eggs
• Potatoes
• Italian sausage
• Cheddar cheese
• Heavy cream
• Bell peppers (red and green)
• Onion
• Parsley
• Garlic salt
• Salt
• Ground black pepper

*Exact measurements are listed in the recipe card below.

🥣 Recommended Tools

• Large skillet
• Mixing bowl
• Saucepan
• 9 x 13 Casserole baking dish

🔪 How to Make Breakfast Casserole with Sausage and Potatoes

Dice your potatoes into small, bite-sized pieces.

Add the diced potatoes to a saucepan and cover with cold water. Heat to a boil, then simmer for 8-10 minutes or until fork tender but not too soft. They will continue to cook in the oven.

While the potatoes are simmering, heat a large skillet to medium and add in the Italian sausage.

Brown the sausage, then remove it and set it aside to cool to room temperature.

Preheat the oven to 375°F. 

Dice your onions and pepper into similar-sized pieces, slightly smaller than the potatoes.

In the same skillet with the pan drippings from the sausage, add the butter, onions, bell peppers, and salt.

Sauté for a few minutes until they are just tender.  Remove it and allow it to cool. Add the eggs, heavy cream, garlic salt, chopped parsley, and ground black pepper to a large mixing bowl and whisk until well combined and a little frothy.

Pour in the cooked and cooled onions, peppers, Italian sausage, potatoes, and 1 ⅓ cups of the shredded cheddar cheese (reserving ⅔ cup for the top), then gently mix to combine.

Pour the mixture into a 9 x 13 baking dish that’s been sprayed with non-stick spray, and bake for 30 minutes or until the eggs have set.  

Then remove from the oven, top with the reserved ⅔ cup shredded cheddar cheese, and bake for another 5-7 minutes or until the cheese has melted.  

Allow it to cool slightly before slicing and serving.

💡 Tips for Making Easy Sausage and Potatoes Breakfast Casserole

• If preparing ahead, assemble the casserole the night before, cover it tightly with plastic wrap or foil, and refrigerate overnight. Remove it from the refrigerator about 30 minutes before baking to take the chill off.

• When you're cooking the potatoes, keep an eye on them. You want to cook them just until they are fork-tender and can still hold their shape when added to the egg mixture.

• To ensure the casserole is fully cooked, insert a knife into the center. If the eggs appear set, the casserole is ready. If they're still slightly runny, cook it for a couple more minutes.

• If the top of the casserole is browning too quickly during baking, cover it loosely with aluminum foil to prevent burning while the rest of the dish cooks through.

☑️ Storage Instructions

Fridge: Allow the baked casserole to cool completely at room temperature. Then cover the baking dish tightly with plastic wrap or aluminum foil. Store the covered casserole dish in the refrigerator for up to 3-4 days.

Freezer: Slice the casserole into individual portions and place them in a freezer-safe container. Label the container with the date and contents. Store them in the freezer for up to 1-2 months. When ready to enjoy, thaw them in the refrigerator and reheat in the microwave or oven until heated through.

🍴 What to Serve with Breakfast Casserole with Potatoes and Sausage

You can serve it with a simple fruit salad made with seasonal fruits like berries, melons, and grapes. For a tangy option, this Watermelon Feta Salad is a great choice.

You could also serve it with a simple side of toast or with these gluten-free Homemade Biscuits or slices of toast with homemade Raspberry, Blackberry or Strawberry Chia Seed Jam.

🔄 Substitutions and Additions

• Potatoes: Instead of Yukon gold potatoes, you can use russet potatoes or even sweet potatoes for a different twist.

• Sausage: This recipe calls for Italian sausage, but you can use a simple breakfast sausage. You can also use ground chicken or turkey sausage if you prefer. You can also swap the sausage and add cooked, crispy bacon.

• Cheese: While cheddar cheese adds a delicious flavor, you can experiment with different types of cheese, such as Monterey Jack, mozzarella, or pepper jack.

• Bell peppers: If you're not a fan of bell peppers, you can substitute them with other vegetables like mushrooms, spinach, or broccoli.

• Fresh herbs: Feel free to add fresh herbs like thyme, rosemary, or chives to the egg mixture.

• Spices: Add a kick of heat with diced jalapeños or a pinch of cayenne pepper, hot sauce, or red pepper flakes.

• Other veggies: Mix in extra vegetables like diced tomatoes, chopped spinach, or caramelized onions for added texture and nutrition.

Can I Make This Potato Sausage Breakfast Casserole Dairy-free?

Yes, you can make a dairy-free version of this casserole by substituting the heavy cream and cheese with dairy-free alternatives such as almond milk or cashew milk and dairy-free cheese.

For another alternative, try this dairy free breakfast casserole that uses dairy free milk, nutritional yeast and skips the cheese!

Can I Use Frozen Vegetables in this Casserole?

Yes, frozen vegetables can be used in this casserole. However, make sure to thaw them completely and drain any excess liquid before adding them to the casserole to prevent excess moisture.

Why is My Casserole Not Setting up in the Middle?

This casserole needs to be baked in a 9x13 dish. If you use one smaller, the center may not set well. To fix this, just tint the edges that are browning with foil, leaving the center exposed as it finishes baking.

Can I Make This Casserole in Individual Servings?

Absolutely. This is a great idea if you're hosting a formal brunch. Just divide the ingredients into individual ramekins or muffin tins. Adjust the baking time accordingly, because smaller portions will cook faster than a large casserole.

🍽️ More Healthy Breakfast Recipes

• Vegan Baked Oats
• Mango Smoothie Bowl
• Apple Cinnamon Overnight Oats
• Banana Chocolate Chip Muffins