Beef and Bean Burritos

INGREDIENTS

• 1 medium onion, diced
• Three 7-ounce cans Mexican tomato sauce (I use El Patobrand) or enchilada sauce
• 1/4 teaspoon chili powder
• One 28-ounce can refried beans
• 12 burrito-size flour tortillas
• 1/4 teaspoon salt
• 3/4 cup grated Cheddar, plus extra for sprinkling
• 1/2 cup fresh cilantro leaves
• 2 pounds ground beef
• 1/2 teaspoon ground cumin
• 1/4 teaspoon ground oregano