Ingredients

1 cup plus tsp unsweetened cocoa powder divided
2 cups each of all-purpose flour and sugar
1/2 cup butter melted
2 large eggs
2 tsp vanilla extract divided
1 tsp baking powder
1 1/8 tsp salt divided
2 tsp baking powder
2 cups boiling water
2 cups whipping cream
1/2 cup powdered sugar
1/3 cup unsweetened dutch cocoa powder

Method

1. Preheat oven to 375 degrees.
2. Grease 13 x 9 baking pan.
3. Combine flour, sugar, remaining cocoa, butter, eggs, 1 tsp salt in large bowl and mix well.
4. Dissolve baking soda in boiling water in a bowl. Add flour mixture and mix well. Spoon batter intp prepared baking pan.
5. Bake about 35 min until done. Let stand to cool.
6. Beat 1 2/3 cups whipping cream in a mixer bowl on high speed until stiff peaks form.
7. Combine remaining whipping cream,powdered sug,dutch cocoa, remaining vanilla and remaining salt in a bowl and mix well. Fold into whipped cream. Spread over cake.