Preheat your oven to 375°F and generously spray a standard 8-cup muffin tin with non-stick cooking spray.
In a skillet over medium heat, cook the sausage links until browned through. Let them cool slightly, then crumble or chop into small pieces.
In a large mixing bowl, whisk together the eggs, milk, garlic powder, smoked paprika, salt, and black pepper until fully combined.
Stir in the crumbled sausage, diced bell pepper, onion, and half the cheddar cheese.
Pour the mixture evenly into 8 muffin cups, filling each about three-quarters full.
Sprinkle the remaining cheddar cheese over the tops.
Bake for 18–20 minutes, until the centers are set and the tops are lightly golden.
Let cool for 5 minutes before running a butter knife around the edges to release them. Serve warm!