Cook the sausage according to the directions on the package and cut it into 1-inch rounds. Cut the basil leaves lengthwise into thirds.
Put an olive half about 1/3 of the way down onto a skewer. Then add 1 strip of basil, folding so it fits nicely on the skewer. Follow with 1 grape tomato and a round of sausage. Position everything on the end of the skewer so the skewer can stand up on its sausage end.
Cook's Note: I used a pre-cooked roasted garlic sausage that just needed to be heated in a skillet for 5 minutes until browned.
I tried to do a version with the baby mozzarella but it would turn out way too caloric.