Grandma's Chicken and Black Bean Chili

Ingredients (9)

• + 2 tablespoons olive oil add to pantry
• + 1 large onion, chopped add to pantry
• + 3 (15 ounce) cans black beans, rinsed and drained add to pantry
• ✓ 2 (14.5 ounce) cans diced tomatoes
• + 2 (5 ounce) cans chicken, drained add to pantry
• + 2 (1.25 ounce) packages chili seasoning mix add to pantry
• ✓ 1 teaspoon ground cumin
• + salt and ground black pepper to taste add to pantry
• + salt and ground black pepper to taste add to pantry