Polenta with Mushroom Cheese Sauce Ingredients 1 16-ounce tube prepared plain polenta, sliced into 2-ounce rounds 1 Tbsp extra virgin olive oil ½ cup onion, minced 2 cups sliced assorted mushrooms ¼ tsp salt ¼ tsp pepper ½ cup white wine ½ cup Vegan sour cream ⅔ cup shredded Fontina cheese (if Vegan, use meltable