Flatten pork to 1/2-in. thickness. In a large resealable plastic bag, combine the pepper, paprika and garlic powder. Add pork, a few pieces at a time, and shake to coat.
In a large skillet over medium-high heat, cook pork in 1 tablespoon oil in batches for 3-4 minutes on each side or until a meat thermometer reads 160°. Set aside and keep warm.
In the same skillet, saute the mushrooms and onion in remaining oil until tender. Add broth and Asti Spumante. Bring to a boil; cook until liquid is reduced by half, about 8 minutes. Stir in cream. Bring to boil; cook for 3-5 minutes or until thickened. Return pork to pan and heat through. Yield: 4 servings.