Cake:
3 cups all-purpose flour
1 1/2 teaspoons baking soda
1/2 teaspoon salt
3/4 cup unsalted butter, softened
2 cups granulated sugar
3 large eggs
1 tablespoon vanilla extract
1 (15 oz) can pumpkin
1/4 cup vegetable oil
1 cup milk

Frosting:
12 oz (1 1/2 packages) cream cheese, softened
3/4 cup unsalted butter, softened
3 tablespoons pure maple syrup
2 teaspoons vanilla extract
2 teaspoons cinnamon
6 cups powdered sugar