Heat oven to 350°F. Line cookie sheet with cooking parchment paper.
In small bowl, mix sweet potatoes, brown sugar and cinnamon. Separate dough into 16 triangles. Place 1 tablespoon sweet potato mixture on each triangle. Top each with about 1 teaspoon chopped pecans and 4 miniature marshmallows. Roll up crescents; place on cookie sheet.
Bake 14 to 16 minutes or until crescents are golden brown and baked through. Cool 5 minutes. Serve immediately.