Philly Cheesesteak Stuffed Shells

INGREDIENTS

1 12 ounce package

Jumbo Shells pasta

1 1/4 lb

New York Steak (sliced thin)

red bell pepper (sliced thin)

green bell pepper (sliced thin)

onion (sliced thin)

1 1/4 cups

sliced mushrooms

2 tbsp

butter (divided)

2 tbsp

vegetable oil (divided)

1 tsp

minced garlic

1/2 cup

beef broth

1/2 tsp

garlic salt

1/2 tsp

Italian seasoning

salt and pepper,

2 tbsp

cornstarch (divided)

2 tbsp

water

1 6 ounce package

sliced provolone cheese (divided)

1 cup

milk

1 cup

beef broth