Mashed Sweet Potatoes with Blue Cheese Breadcrumbs

INGREDIENTS

• 3 lb. sweet potatoes
• 2 tbsp unsalted butter
• 1/4 cup skim milk
• Salt and pepper to taste
• 3/4 cup panko breadcrumbs
• 1/4 tsp kosher salt
• 1/4 tsp freshly ground black pepper
• 1 1/2 oz. blue cheese, crumbled
• 2 tbsp (packed) Parmesan cheese
• 1 tbsp olive oil