Cook your sausage or bacon in a large skillet. Make sure the meat is fully cooked and brown. Drain the extra grease on a paper towel.

Spray the inside of your crockpot with cooking spray. This prevents the eggs and cheese from sticking. It makes cleaning the pot much easier later.

Place half of the frozen hash browns on the bottom. Spread them out to make an even layer. This creates a solid base for the casserole.

Sprinkle half of the cooked meat over the potatoes. Add half of the peppers and green onions. Then, add a layer of shredded cheese.

Add the rest of the potatoes on top. Follow with the remaining meat, veggies, and cheese. This ensures every bite has all the flavors.

In a large bowl, whisk the eggs and milk. Add the salt, pepper, and garlic powder. Mix until the yellow and white are blended.

Slowly pour the egg mixture into the crockpot. It will seep down through the potatoes and meat. Do not stir the layers together.

Put the lid on the slow cooker tightly. Cook on "Low" for 7 to 8 hours. The eggs should be set and firm.