Sweet Potato Souffle Recipe

Name: Sweet Potato Souffle Recipe
Ingredients: 3 pounds sweet potatoes (peeled and cut into 1/2 inch pieces); 1/2 cup salted butter ( cut into 1/2 inch pieces); 1/4 cup whole milk; 1/2 cup packed brown sugar; 1/3 cup plain panko bread crumbs; 1 1/4 tsp kosher salt; 1 1/4 tsp fresh ginger (peeled and finely grated (or use the frozen crushed ginger cubes- Dorot Gardens)); 1 tsp. baking powder; 1/2 tsp ground cinnamon; 1/2 tsp vanilla; 1/8 tsp cayenne pepper; 5 large eggs; non stick cooking spray