Scalloped Sweet Potatoes - RecipesRun

Ingredients

• 2 tbsp. chopped fresh rosemary
• 1 cup shredded Gruyere cheese, divided
• 2½ cups low-fat milk
• ¼ tsp. white or black pepper
• ½ tsp. salt
• 3 tbsp. all-purpose flour
• 1 small onion, finely chopped (about 1 cup)
• 3 tbsp. extra-virgin olive oil, divided
• 2½ pounds sweet potatoes, peeled and cut into ¼-inch slices (about 8 cups)