California Classic Macaroni & Cheese

1. Preheat oven to 400°F. Melt 1/4 cup of the butter in large saucepan over medium heat; add onion. Sauté 3 minutes. Stir in flour; cook, stirring, 3 minutes. Whisk in milk and half-and-half.

2. Cook until slightly thickened, about 6 minutes. Stir in mustard and Worcestershire sauce. Remove from heat. Stir in 3 1/2 cups of the cheese until melted. Season with salt, cayenne and black pepper. Place cooked macaroni in greased 9 x 13-inch baking dish; pour sauce over and mix completely. Top with the remaining 1 cup cheese. Bake for 20 minutes.

3. Meanwhile, melt the remaining 1/4 cups butter in large skillet over medium heat. Add bread crumbs; cook and stir until lightly toasted. When pasta is hot and bubbly, sprinkle crumbs over top. Broil until crumbs are golden brown, about 1 minute. Sprinkle with parsley. Serve hot.