This Philly Cheesesteak Macaroni and Cheese is a hearty pasta dish Philly style!
Preheat oven to 375 degrees. Fill large pot with water and 2 tsp. salt and prepare the macaroni al dente according to directions on package. Drain and set aside.
In a large saucepan oven medium-high heat, heat oil. Add steak meat and season with salt and pepper. Cook until no longer pink. Remove steak meat to a large plate. Drain fat from pan.
Melt 3 Tbsp. butter over medium heat in saucepan. Add onion and green pepper and cook for 10-12 minutes until browned. Whisk in flour and cook for one minute. Slowly whisk in milk, cream, mustard, cayenne, salt and pepper.
Stirring constantly, continue to cook for 8 minutes until nice and thick. Stir in 3 1/2 cups cheeses. Stir until cheese is melted. Add pasta and steak meat. Pour into a 2.4 qt. or a 9x13 baking dish sprayed with non-stick cooking spray. Sprinkle with the leftover cheeses and the pretzel crumbs. Bake for 30 minutes until bubbly and nice and golden browned.
Pretzel Crumbs: place pieces of soft pretzel in food processor. Process until coarse crumbs form. Melt butter in a large skillet over medium heat. Add crumbs and cook for 3-4 minutes, tossing often until lightly browned. Remove from heat.