Preheat your oven to 350°F. Grease a 12-cup muffin pan with non-stick cooking spray and set it aside.

Crumble the sausage into a skillet and cook over medium-high heat until it's no longer pink. Drain off the fat and let the sausage cool slightly.

In a large mixing bowl, lightly beat the eggs. Add the shredded cheese, Bisquick, and cooked sausage, mixing everything well.

Fill each muffin cup about ¾ full with the mixture. Bake for 18-20 minutes, or until the tops are golden brown.