Prep: Preheat the oven to 350 degrees F (176 C). Line a 9 x 13 inch pan with parchment paper.
Dry Ingredients: In a medium mixing bowl, add the gluten-free flour blend, baking powder, baking soda, salt, cinnamon, and pumpkin spice. Whisk together well.
2 cups gluten-free all purpose flour, 1 ½ teaspoons gluten-free baking powder, 1 teaspoon baking soda, 1 teaspoon salt, 2 teaspoons pumpkin pie spice, 1 ½ teaspoons ground cinnamon
Wet Ingredients: In a large mixing bowl, add the oil, milk, sugars, maple syrup, pumpkin puree, and vanilla extract. Whisk together well. Then add the GF flour mixture and whisk or stir until fully combined in a thick batter.
1 cup vegetable oil, ½ cup milk, 1 cup light brown sugar, ⅓ cup granulated sugar, 2 tablespoons maple syrup, 1 15-ounce can pumpkin puree, 1 ½ teaspoons vanilla extract
Bake: Pour the batter into the lined pan and spread it evenly with a spatula or wooden spoon. Bake on the middle oven rack for 25-30 minutes, or until a toothpick inserted in the center comes out clean or with a few dry crumbs.
Cool + Frost: Allow to cool completely in the pan. Then use the parchment paper to remove the bars. Frost with cream cheese frosting and cut into bars. Enjoy!
1 batch cream cheese frosting