Yummy black beans that taste like the ones from the Cafe Rio chain

Kirsten wrote: We cooked for 20+ mins.

Cafe Rio Style Black Beans
Prep Time 5 Minutes
Cook Time 15 Minutes
Preparation Instructions
Chop onions and garlic. Heat extra virgin olive oil on medium high heat and cook onions and garlic with cumin until soft. Add all other ingredients and simmer at least ten minutes.
Best served with Lime Cilantro Rice.
Ingredients
2 Tablespoons Onion, finely chopped
2 cloves Garlic, Finely Chopped
1 Tablespoon Extra Virgin Olive Oil
½ teaspoons Cumin
1 can (15-16oz) Black Beans (or use the same amount of presoaked, dry beans)
8 Tablespoons Tomato Sauce
3 Tablespoons Cilantro, Chopped