Hot Fudge Cake

1 cup flour 1/2 cup sugar 2 Tbsp. cocoa 2 tsp. baking powder 1/4 tsp. salt 1/2 cup milk 2 Tbsp. oil 1 tsp. vanilla 1/2 cup chopped pecans 3/4 cup brown sugar 1/4 cup cocoa 1-1/2 cups hot water Spray the inside of a 3 quart crockpot with nonstick cooking spray. In a medium bowl, combine flour, sugar, 2 Tbsp. cocoa, baking powder, and salt. Add milk, oil and vanilla and mix until smooth. Add nuts, then spread in bottom of crockpot. In a small bowl, combine brown sugar and 1/4 cup cocoa and blend with whisk. Add hot water and stir until smooth. Pour over batter in crockpot. Cover crockpot and cook on high for 2 to 2-1/2 hours or until toothpick inserted in center of cake comes out clean. Turn off crockpot and let cake stand, uncovered, 30-35 minutes to cool slightly. Spoon cake onto serving dishes and cover with sauce that has formed in the bottom of the crockpot.