Preheat oven to 350°F (175°C) and grease a baking dish.
Combine mashed sweet potatoes, cottage cheese, rolled oats, cinnamon, vanilla extract, walnuts, maple syrup if using, and salt in a large bowl until well mixed.
Spread the mixture evenly in the prepared baking dish.
Bake for 30 to 35 minutes until the top is set and golden brown.
Notes
Top with fresh fruit or yogurt for extra flavor.
Prepare in advance and reheat for a quick breakfast.