Found this recipe on the Pillsbury website while looking for something quick to make for dinner using a can of crescent rolls. Surprisingly, it tastes EXACTLY like McD's burgers - don't leave out the dill pickles, that's what makes the entire recipe!!
Heat oven to 375°F. In 10-inch nonstick skillet, cook beef and onion over medium-high heat 5 to 7 minutes, stirring frequently, until thoroughly cooked; drain. Stir in pickles, water, ketchup, mustard and pepper.
Spoon beef mixture into 11x7-inch (2-quart) glass baking dish. Sprinkle with cheese.
Unroll dough; press 2 crescents together to form a rectangle; continue till all crescents are done. Place on top of cheese. Brush with egg; sprinkle with sesame seeds.