- 1 1/2 cups (6.75 ounces) all-purpose flour
- 1 teaspoon ground cinnamon
- 1/4 teaspoon ground ginger
- 1/4 teaspoon ground nutmeg
- 1/4 teaspoon baking soda
- 1/4 teaspoon salt
- 1 stick (4 ounces) unsalted butter, melted
- 2/3 cup packed light brown sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1 cup (7.5 ounces) pumpkin puree
- 1 stick (4 ounces) unsalted butter, at room temperature
- 1/4 cup light brown sugar, packed
- 1/2 teaspoon ground cinnamon
- 1/8 teaspoon salt
- 1 1/2 cups powdered sugar, sifted
- 1/2 teaspoon vanilla extract
- 1 tablespoon milk, plus more if needed
