Instant Pot Sausage & Potato Breakfast Casserole: The Weekday Brunch Game Changer

I remember the first time I tasted a breakfast casserole. It was at a family reunion, and my aunt, a legendary cook, had baked one that was warm, comforting, and bursting with flavor. The combination of savory sausage, fluffy eggs, and cheesy goodness was a revelation. It was so satisfying and effortless to serve a crowd, that’s why I was excited to develop this recipe, but speed up the cooktime using the Instant Pot!

Recipe Overview

• Prep Time: 10 minutes
• Cook Time: 40 minutes
• Total Time: 50 minutes
• Servings: 6-8
• Dietary Type: Gluten-Free

Ingredients

• 1 tablespoon olive oil
• 1 tablespoon unsalted butter
• 1/2 lb breakfast sausage
• 1/2 cup diced yellow onion
• 2 cups frozen potatoes o’brien with onions & bell peppers
• 2 cups baby spinach, chopped
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 1/4 teaspoon crushed red pepper flakes
• 1 cup water
• 9 large eggs
• 2 tablespoons milk
• 1/2 cup shredded colby-monterey jack cheese
• 1 tablespoon chopped fresh chives

Equipment Needed

• 6-quart or larger Instant Pot
• 7-inch round baking dish (that fits inside your Instant Pot)
• Metal trivet or wire rack
• Large bowl
• Whisk

Instructions

1. Begin by setting your Instant Pot to sauté on high. Allow it to heat up.
2. Once the Instant Pot is hot, add the olive oil and unsalted butter. Let the butter melt completely.
3. Add the breakfast sausage to the pot. Use a wooden spoon to break the sausage into smaller pieces as it cooks. Cook until the sausage is no longer pink, which should take approximately 5 minutes.
4. Stir in the diced yellow onion and frozen potatoes o’brien. Continue to cook for another 2 minutes, stirring occasionally to prevent sticking.
5. Add the chopped baby spinach, salt, black pepper, and crushed red pepper flakes to the mixture. Cook until the spinach has wilted, usually about 1-2 minutes.
6. Turn the Instant Pot off to stop the sauté function. Transfer the sausage and vegetable mixture to a greased 7-inch round baking dish. Set aside.
7. Thoroughly clean the inner bowl of the Instant Pot and return it to the appliance.
8. Insert a metal trivet or wire rack into the Instant Pot. Pour in the water. This is essential for creating steam and preventing the baking dish from directly contacting the heat source.
9. In a large bowl, whisk together the eggs and milk until the mixture is smooth and well combined.
10. Pour the egg mixture into the baking dish over the sausage and vegetable mixture. Gently stir to evenly incorporate the eggs into the sausage and vegetables.
11. Sprinkle the top of the casserole with the shredded colby-monterey jack cheese.
12. Carefully place the baking dish into the Instant Pot, resting it on the trivet or wire rack.
13. Lock the Instant Pot lid in place, ensuring that the valve is set to the sealing position.
14. Pressure cook on high for 30 minutes.
15. Once the cooking time is complete, allow the Instant Pot to natural release for 10 minutes. After the natural release, manually release any residual steam inside the pot. Be careful to avoid steam burns.
16. Carefully open the lid of the Instant Pot. Remove the baking dish from the pot.
17. Garnish with chopped fresh chives before serving.

Chef’s Note: For a browned and slightly crispy top, you can carefully place the casserole under the broiler for a minute or two until it reaches your desired level of golden-brown perfection. Watch it closely to prevent burning!

Expert Tips & Tricks

• Sausage Selection: Feel free to experiment with different types of sausage! Italian sausage, chorizo, or even a vegetarian sausage alternative would work well.
• Vegetable Variety: Customize the vegetable mix to your liking. Mushrooms, bell peppers, or zucchini would be delicious additions.
• Cheese Choice: Colby-Monterey Jack is a great melter, but feel free to use cheddar, mozzarella, or even a sprinkle of parmesan.
• Spice Level: Adjust the amount of crushed red pepper flakes to control the heat. Omit them altogether if you prefer a milder casserole.
• Make-Ahead Option: You can assemble the casserole ahead of time and store it in the refrigerator overnight. Add a few minutes to the cooking time if starting from cold.
• Preventing a Soggy Casserole: Ensure the spinach is well-wilted before adding the egg mixture. Excess moisture can lead to a soggy casserole.
• Even Cooking: Stirring the egg mixture gently into the sausage and vegetables helps to ensure even distribution and cooking.

Serving & Storage Suggestions

Serve the Instant Pot Sausage & Potato Breakfast Casserole warm, directly from the baking dish or sliced into individual portions. It pairs perfectly with a side of fresh fruit, toast, or a dollop of sour cream or Greek yogurt.

For leftovers, allow the casserole to cool completely before storing it in an airtight container in the refrigerator. It will keep for up to 3-4 days.

To reheat, you can microwave individual portions until warmed through, or bake the entire casserole in a preheated oven at 350°F (175°C) until heated through.

Freezing is also an option. Wrap individual slices tightly in plastic wrap and then place them in a freezer-safe bag or container. Frozen casserole will last for up to 2 months. Thaw overnight in the refrigerator before reheating.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	493.6 kcal	N/A
Total Fat	37.8 g	58%
Saturated Fat	13.9 g	69%
Cholesterol	487.4 mg	162%
Sodium	1262.9 mg	52%
Total Carbohydrate	7.4 g	2%
Dietary Fiber	2 g	8%
Sugars	3.2 g	12%
Protein	30.2 g	60%

Note: Nutritional information is an estimate and may vary based on specific ingredients used.

Variations & Substitutions

• Spicy Sausage: Use hot Italian sausage or chorizo for a spicier kick.
• Vegetarian Option: Substitute the breakfast sausage with plant-based sausage crumbles.
• Dairy-Free: Use dairy-free cheese and almond or soy milk.
• Loaded Casserole: Add cooked bacon, ham, or other breakfast meats.
• Potato Swap: Use sweet potatoes or diced hash browns instead of the frozen potatoes o’brien.
• Herby Delight: Add fresh herbs like rosemary, thyme, or oregano for an extra layer of flavor.

FAQs (Frequently Asked Questions)

Q: Can I use a different size baking dish?
A: A 7-inch baking dish is recommended for optimal cooking in the Instant Pot. If you use a larger dish, the casserole may not cook evenly.

Q: Can I skip the natural release?
A: While you can do a quick release immediately, allowing for a 10-minute natural release helps the casserole set properly and prevents it from deflating.

Q: Can I make this without an Instant Pot?
A: Yes! You can bake it in a preheated oven at 350°F (175°C) for 45-55 minutes, or until the eggs are set and the top is golden brown.

Q: My casserole is watery. What did I do wrong?
A: Make sure to thoroughly wilt the spinach to remove excess moisture. Also, avoid over-whisking the eggs, as this can introduce air and cause the casserole to become watery.

Q: Can I add other vegetables?
A: Absolutely! Feel free to add any vegetables you enjoy, such as bell peppers, mushrooms, or zucchini. Just be sure to cook them slightly before adding them to the casserole.

Final Thoughts

This Instant Pot Sausage & Potato Breakfast Casserole is a fantastic way to start your day or impress guests at brunch. The Instant Pot makes it incredibly easy and quick to prepare, delivering a flavorful and satisfying dish every time. Whether you stick to the original recipe or experiment with variations, I encourage you to give it a try. I’d love to hear about your experience, so please share your feedback and any creative twists you add! Pair it with a mimosa for the ultimate brunch experience.