Preheat oven to 350°F. Grease a 9”x13” baking pan or line with parchment paper.
In a large bowl combine flour, baking powder, cinnamon, nutmeg, cloves and salt. Mix thoroughly and remove ¼ cup to toss with the dates.
In a medium bowl toss the dates with the reserved flour mixture. Add pecans and set aside.
In the large bowl of an electric mixer combine melted butter, brown sugar, eggs, pumpkin puree, water, milk and vanilla. Beat until combined.
On low speed, slowly add flour mixture beating until incorporated.
Add date and pecan mixture beating until combined. Finish stirring by hand if necessary.
Pour batter into prepared pan. Bake in preheated oven for 1 hour. Allow to cool before serving.
Cut in squares and serve as is or with vanilla ice cream and caramel sauce for a real treat.