Preheat oven to 350 F.

Spray 12-cup muffin pan with nonstick cooking spray; set aside.

Spray large skillet with nonstick cooking spray.

In prepared skillet over medium heat, cook onion until translucent. Add turkey sausage and cook until no longer pink. Remove from heat.

In large mixing bowl, lightly beat eggs. Add shredded cheese, pancake mix and sausage and onion mixture; mix well.

Fill prepared muffin cups about 3/4 full with mixture.

Bake 18-20 minutes, or until golden brown on top.