I got the idea for a Taco Ring here, but I wanted something to cover the meat completely (and also I wouldn't use Pillsbury crescent rolls even if I had them). I used a full recipe of pizza dough, divided in half and rolled into two ovals, with the centers cut out. Pile on cooked taco meat and some cheese...Add the top layer and bake! Ours baked at 375 for 20-25 minutes. Cut into wedges and serve with taco toppings, salsa, or (in our case) Ranch dressing.
This would be even easier if you had cooked ground beef already in your freezer.