Preheat your oven to 350°F and position a rack in the center
Grease a muffin tin with cooking spray or line it with silicone muffin cups
In a mixing bowl, whisk together the eggs, milk, salt, and pepper until well combined
Distribute the shredded cheddar cheese and crumbled bacon evenly among the muffin cups. Pour the egg mixture over the bacon and cheddar in each muffin cup, filling them about 3/4 full. Gently tap the muffin tin on the counter to remove any air bubbles
Bake in the preheated oven for about 20-25 minutes, or until the egg bites are puffy, set, and slightly golden on top. Remove the muffin tin from the oven and let it cool for a few minutes
Using a knife, carefully remove the egg bites from the muffin cups. Serve the bacon and cheddar egg bites warm
