Black Bean Skillet with Corn

Ingredients

• 1 tablespoon olive oil
• 1 medium yellow onion, chopped
• 1 red bell pepper, chopped
• 2 cloves garlic, minced
• 1 1/2 teaspoons chili powder
• 1 teaspoon ground cumin
• 1/2 teaspoon dried oregano
• 3/4 teaspoon salt
• 1/4 teaspoon black pepper
• 1 (14.5 ounce) can diced tomatoes, undrained
• 2 (15 ounce) cans black beans, rinsed and drained
• 1 1/2 cups frozen corn kernels
• 8 small whole wheat tortillas
• 1/2 cup plain Greek yogurt
• 1 lime, halved
• Fresh cilantro, chopped, for garnish (optional)