Taco Casserole

INGREDIENTS

• 1 pound lean ground beef
• 8 ounces macaroni
• 1/2 cup chopped onion
• 1 (10.75 ounce) can condensed tomato soup
• 1 (14.5 ounce) can diced tomatoes
• 1 (1.25 ounce) package taco seasoning mix
• 2 ounces shredded Cheddar cheese
• 2 ounces shredded Monterey Jack cheese
• 1 cup crushed tortilla chips
• 1/2 cup sour cream (optional)
• 1/4 cup chopped green onions