Baked Portobello Mushroom Alfredo

Description:

Ingredients:

8 oz. fettuccine, cooked al dente
3 c. sliced portobello mushroom caps
½ c. diced onion
¼ c. Horizon Organic butter
1 c. Horizon Organic sour cream
½ c. Horizon Organic shredded mozzarella cheese
½ c. shredded Parmesan cheese
½ c. Horizon Organic half & half
¼ c. panko bread crumbs
½ tsp. kosher salt
¼ tsp. pepper