"Very simple, satisfying, and way more authentic, these huevos rancheros are a nice change of pace from your usual eggs. Try substituting the quesadilla with corn tortilla chips topped with melted cheese."
Heat black beans and salsa in a saucepan over medium-low heat until hot, 1 to 2 minutes.
Heat a skillet over medium-high heat. Heat 1 tortilla until hot. Sprinkle on Monterey Jack cheese and top with remaining tortilla, flip, and cook until cheese is melted and tortilla is lightly browned, 1 to 2 to minutes per side. Transfer to a serving platter. Season with salt and pepper.
Heat butter in a skillet over medium-low heat. Crack eggs into skillet and cook until set, 3 to 5 minutes. Place eggs onto tortillas and season with salt and pepper.
Pour black bean mixture over eggs. Garnish with avocado, sour cream, and cilantro.