Preheat the oven to 350F degrees. Grease a 12-cup muffin pan with non-stick cooking spray; set aside.
Crumble the sausage into a skillet over medium-high heat and cook until no longer pink. Drain off the fat and set the sausage aside to cool slightly.
In a large mixing bowl, lightly beat the eggs. Add the shredded cheese, Bisquick, and the fully cooked sausage; mix well.
Fill the prepared muffin cups about ¾ full with the mixture. Bake for 18-20 minutes, or until golden brown on top.
