Zippy Macaroni and Cheese

Ingredients

• 1 1/3 cups uncooked elbow macaroni
• 1 cup 4% cottage cheese
• 1/2 cup shredded part-skim mozzarella cheese
• 1/2 cup shredded cheddar cheese
• 1 tsp cornstarch
• 1 cup milk
• 1 small onion, grated
• 1/4 cup finely chopped green pepper
• 1 tsp Dijon mustard
• 1/2 tsp salt
• 1/4 to 1/2 tsp crushed red pepper flakes
• 1/2 cup crushed cornflakes
• 1 tbsp butter, melted