One Step Macaroni and Cheese - Click 'N Cook

Ingredients

• 1 1/2 cups macaroni, uncooked
• 1 small onion
• 1 1/2 tablespoons flour
• 1/2 teaspoon Worcestershire sauce
• 1 1/2 cups water
• 1 cup non fat milk
• 2 tablespoons margarine
• 1 cup low fat shredded cheese