Nacho Casserole

Ingredients (22)

• 1 tablespoon extra-virgin olive oil
• 1 onion
• 1 pound 98% lean ground beef
• 4 tablespoons all-purpose flour
• 2 tablespoons tomato paste
• 1 3/4 cups chicken broth
• 1 15- ounce can tomato sauce
• 1 tablespoon chili powder
• 1 teaspoon cumin
• 1/4 teaspoon paprika
• salt and freshly ground pepper
• 3 cups cooked white rice
• 2 1/2 cups shredded cheddar
• 1/2 cup Shredded Monterey Jack
• 1/4 cup sour cream
• 1 cup crushed tortilla chips
• 2 tablespoons butter
• 1 cup milk
• chopped tomatoes
• avocado
• Hot sauce
• sliced green onions