2 tablespoons extra-virgin olive oil
1 small red or white onion, finely chopped
Salt to taste
2 garlic cloves, minced
3/4 pound tomatoes, peeled and diced
1 1/2 pounds summer squash, cut in small dice (about 4 1/4 cups)
1 serrano chile, minced
1 1/2 cups cooked white beans, pinto beans or black beans (1 can, drained and rinsed)
1/4 cup chopped cilantro (more to taste)
12 to 14 warm corn tortillas
2 ounces goat cheese, crumbled (1/2 cup)
Salsa of your choice