Carrot Cake Pancakes

Name: Carrot Cake Pancakes
Ingredients: 4 oz. cream cheese, softened; 1/4 c. maple syrup; 1/4 c. powdered sugar; 2 tbsp. heavy cream; 1 c. all-purpose flour; 1/4 c. packed light brown sugar; 2 tsp. baking powder; 1 tsp. baking soda; 1 tsp. cinnamon; 1/2 tsp. kosher salt; 1/4 tsp. nutmeg; 1/2 c. whole milk; 1/2 c. sour cream; 2 large eggs; 2 tbsp. butter, melted, plus more for pan; 1 tsp. pure vanilla extract; 1/2 c. shredded carrots; 1/2 c. finely chopped toasted walnuts, plus more for serving