Black Bean Breakfast Tostadas

Divide tostada shells between 4 plates.

Combine back beans, avocado, and lime juice in a bowl. Gently stir to combine. Divide mixture between tostada shells. Top each tostada with a slice of cheese.

Heat oil in a small skillet over medium-high heat. Crack an egg into the hot oil. Cook for 2 minutes. Flip and cook until set, 2 minutes more. Transfer egg to the top of one of the prepared tostada shells. Repeat with remaining eggs.