Variations & Tips
For a bit of a kick, you can add sliced jalapeños or a sprinkle of red pepper flakes to the beef before cooking. If you prefer a different cheese, Swiss or mozzarella are great alternatives to provolone. For a lower-carb option, you can serve the beef and cheese over a bed of greens instead of in a roll. To save time on busy mornings, prep the ingredients the night before and store them in the fridge, then just pop everything into the slow cooker before heading out the door.