Preheat the oven to 375°F (190°C).
Grease a muffin tin with cooking spray or butter.
Cut the bacon slices in half and place the two halves in each muffin cup, forming a ring around the edge.
In a small mixing bowl, whisk together the eggs and cheddar cheese. Season with a pinch of salt and pepper.
Divide the mixture evenly between the muffin cups.
Bake in the preheated oven for 15-20 minutes, until the eggs are set and the bacon is crispy.
Remove from the oven and let cool for a few minutes. Use a knife or spatula to loosen the edges of the cups from the muffin tin, then gently remove them from the tin.