Preheat the oven to 375 degrees.
Melt the butter in a skillet on medium high heat. Saute the onion & bell pepper until tender, about 10 minutes. Stir in the cream cheese & beef broth, continuing to stir until the cream cheese is melted. Mix in the chopped roast beef. Season with salt & pepper.
In a large round casserole dish or on a large pizza pan, lay out your crescent rolls, wide ends in the center, & points overlapping, making a wreath-like shape. Scoop in the philly cheesesteak mixture, then top with the sliced provolone cheese. Fold over the point ends of the crescent rolls completing your crescent ring.
Bake for 20 minutes, or until the crescent dough is lightly browned.