Preheat oven to 450 degrees.
Rub mustard all sides of both racks of ribs.
In a small bowl combine smoked paprika, garlic powder, onion powder, cayenne, light brown sugar and salt and pepper.
Rub mixture over all sides of racks of ribs.
Place racks of ribs on large sheet pan and cover with foil.
Place ribs in the pre-heated oven. Reduce heat to 225 degrees.
Bake for about 3 hours or until fork tender.
While racks of ribs are cooking prepare peach salsa by combining all the ingredients together in a small bowl. Set aside until racks of ribs are ready.
Remove foil and coat racks of ribs with Stubb's Sweet & Sticky Barbeque Sauce.
Place under broiler or on grill for about 5 minutes until starting to bubble and caramelize.
Remove from oven and top with peach salsa.