Crock Pot Peanut Butter & Hot Fudge Pudding Cake

1/2 cup flour
1/4 cup sugar
3/4 tsp baking powder
1/3 cup milk
1 Tbs veg. oil
1/2 tsp vanilla
1/4 cup peanut butter
1/2 cup sugar
3 Tbs cocoa
1 cup boiling water

     Combine flour, 1/4 cup sugar and bkg. powder.  
Add milk, oil and vanilla.  Stir until smooth.  
Mix in peanut butter.  Pour into Crock Pot.
     Stir together 1/2 cup sugar & cocoa.  
Gradually stir in boiling water.
 Pour mixture over batter. Do not stir.
 Cook on high 2 - 3 hrs or until toothpick comes out clean.