Preheat oven to 350

Spray 13x9-inch baking dish with cooking spray

Cook & drain spaghetti. Set aside.

Melt butter.

Stir in flour, salt, & pepper. Cook & stir over medium heat until smooth & bubbly.

Gradually stir in half & half. Heat to boiling & boil for 1 minute. Remove from heat.

Add cooked spaghetti, bacon, peas and 1 cup of cheese. Toss to coat spaghetti. Stir in egg. Spoon into baking dish.

Sprinkle with 1/2 cup cheese.

Bake uncovered 20 minutes or until set and edges are bubbly.

Sprinkle with parsley. Cut into squares & serve.