PLACE turkey in parchment-lined full-sheet pans (or in lined half-sheet pan for trial recipe). Season with salt and black pepper.
BAKE in 375ºF-convection oven 30 min. Meanwhile, mix barbecue sauce, vinegar, mustards and crushed red pepper. Prepare Whipped Sweet Potatoes with Streusel Topping.
SPREAD each turkey breast with 1/3 cup barbecue sauce mixture; continue baking 6 min. or until done (165ºF). Let stand 10 min. Meanwhile, heat remaining barbecue sauce mixture. Slice turkey.
FOR each serving: Spoon 3/4 cup Whipped Sweet Potatoes with Streusel Topping onto plate; top with 5 oz. turkey. Serve 3 Tbsp. warm barbecue sauce mixture in ramekin on the side.