Heat vegetable oil in a saute pan. Add onions. Sweat until nearly caramelized. Add garlic. Sweat until fragrant. Add tomatoes and bell pepper. Toss. Add black beans. Toss. Add avocado and juice of one lime. Toss. Season with salt and pepper.

Garnish with crumbled queso fresco. Serve with lime wedge.

Variations; Cilantro, goat cheese, tequila, vegetable stock, orange juice, pineapple, shallots, mojo, agave, cayenne, ancho chile, chipotle, salsa, corn, celery, potato,