Avocado Breakfast Sandwich

Heat olive oil in a skillet over medium heat. Crack eggs into skillet; cook for 1 to 2 minutes. Flip and cook egg until done 2 to 5 minutes more. Transfer eggs to a plate and season with salt and pepper.

Spread butter onto 1 side of each bread slice.

Heat a skillet over medium heat. Lay bread slices in the hot skillet butter-side down. Quickly layer Swiss cheese 1 fried egg Cheddar cheese 1 fried egg avocado and remaining bread slice butter-side up. Carefully flip sandwich to grill other side until golden brown 3 to 4 minutes.

Remove sandwich from skillet and cut in half.