Ultimate Philly Cheese Steak Casserole

**INSTRUCTIONS**
Step 1: Prepare the oven. Preheat it to 350 degrees.

Step 2: Mix the beef stock with 32 ounces of water and cook the shells following the package directions. Set aside half a c. of the reserved pasta water.

Step 3: Melt the butter in an oven-proof skillet. Then, add the garlic clove and cook for about 35 seconds before adding the bell pepper and onion. Continue to cook for 5 minutes more until tender.

Step 4: To the skillet, add the ground beef and sprinkle with salt and pepper. Continue to cook until done. Then, drain the grease and bring it back to heat. Next, stir in the cream cheese until melted. Pour in the reserved pasta water and add the noodles followed by the shredded mozzarella. Mix well.