Philly Stuffed Peppers, super easy high protein low carb - I know that this is not vegetarian, but not everyone I know is so this might be a great buffet or pot luck dish! You could use any high protein meat in these, like chicken or turkey!
Flourless Peanut Butter Chocolate Chip Cookie Sandwiches with Peanut Butter Cinnamon Cream filling. The cookies alone contain No Butter or Oil and they're Gluten-free! (Or sub ice cream for the filling)