Step 1

Preheat oven to 350°F. Spray muffin tin with cooking spray.

Step 2

Cook the sausage over medium-high heat until it's almost done.

Step 3

Add the onion and cook over low heat, until sausage is cooked and onion is translucent. Remove from heat and set aside to cool.

Step 4

Mix together eggs, salt, pepper, and whisk until combined. Add cheese and bell pepper and mix in. Once the sausage is cool, mix it in.

Step 5

Spoon into the muffin cups.

Step 6

Bake for 10-12 minutes until puffy and just set for mini muffins, or 20-22 minutes for regular muffins.