Chicken Enchiladas

Ingredients

• 4 c. finely chopped cooked chicken
• 1 c. chopped onion
• 1/4 c. margarine
• 1/4 c. flour
• 2 1/2 c. hot chicken broth
• 1 (8 oz.) sour cream (room temperature)
• 1 c. shredded Cheddar cheese
• 1 c. shredded Monterey Jack cheese
• 1 (4 oz.) can chopped green chilies, drained
• 1 (4 oz.) can chopped black olives, drained
• 1 tsp. ground cumin
• 10 flour tortillas (8-inch)