Black Bean Tacos

Ingredients

• 1 onion, chopped
• 2 garlic cloves, minced
• 1 tablespoon vegetable oil
• 2 (15 ounces each) cans black beans, rinsed, drained
• 1 (14.5-ounce) can diced tomatoes
• 1 (4-ounce) can chopped green chilies
• 1 tablespoon chili powder
• 1 teaspoon ground cumin
• 1/2 teaspoon ground coriander
• 1/4 teaspoon garlic powder
• Salt and freshly ground black pepper to taste
• 8 corn tortillas, warmed
• 1/2 cup shredded Cheddar cheese
• 1 avocado, peeled, pitted, sliced
• Fresh cilantro leaves