Original recipe here
1 2/3 cup flour
1⁄4 teaspoon baking powder
1 teaspoon baking soda
1⁄2 tablespoon cinnamon
1⁄4 teaspoon nutmeg
1/3 cup butter (room temperature)
1 1/3 cup sugar
2 large eggs (or 1/2 cup egg substitute)
1 tablespoon vanilla
1⁄2 cup water
1 cup canned pumpkin (make sure it’s plain pumpkin and not spiced)
1⁄2 cup chocolate chips
Preheat oven to 350º.
Stir together butter, sugar, and vanilla. Add pumpkin, water, vanilla, and all dry ingredients. Add chocolate chips last.
Pour into lightly greased 10×15 jelly roll pan. Bake 25 – 35 minutes.
Let cool, then cut into pieces and serve.