Finely dice the onion and jalapeño peppers.
Fire up the grill (gas or charcoal).
In a sauté pan, mix 2 Tbsp. of the garlic sauce, onions and peppers until onions are translucent and peppers are tender. Remove from heat and stir in Parmesan cheese, and salt and pepper to taste.
Grill kielbasa. Spread remaining garlic sauce on the buns and toast on the grill.
Courtesy of Tulkoff Food Products, Inc. for recipe and photograph.