Things to Grill in Foil Garlic Shrimp (No. 8) Mix 1/2 stick softened butter, 1 cup chopped parsley, 2 chopped garlic cloves, and salt and pepper. Toss with the juice of 1 lemon, 1 pound unpeeled large shrimp and a big pinch of red pepper flakes. Divide between 2 foil packets. Grill over high heat, 8 minutes.