Huevos Rancheros Cups with Green Chile Avocado Sauce

Name: Huevos Rancheros Cups with Green Chile Avocado Sauce
Ingredients: 1 1/2 cups cooked black beans; 2 tablespoons olive oil, divided; pinch of ground cumin; pinch of salt; pinch of cayenne; generous pinch of red chile powder; 1 teaspoon lime juice; 1/4 cup fresh cilantro, chopped, plus more for garnish; 1/3 cup chopped baby spinach (optional); 4 corn tortillas (or a corn/wheat blend), warmed slightly just before use; 1/2 cup cheese, grated (cheddar or jack); 4 large eggs; 1/2 cup diced tomatoes, for serving; 1 ripe avocado; 1 cup green chile sauce or salsa verde (see note); juice from 1/2 a lime; 1 garlic clove, minced; 1/4 cup chopped fresh cilantro