Mashed Potato Chocolate Cake - Cooking.com.au

Ingredients

• 1 cup hot, unseasoned mashed potatoes (no lumps!)
• 1 cup lukewarm water
• 2 cups sifted all-purpose flour
• 3/4 cup unsweetened Dutch process cocoa powder
• 2-1/4 tsp. baking powder
• Optional: 2 tsp. instant coffee granules
• 1/2 tsp. baking soda
• Pinch of salt
• Optional: 1 cup miniature semisweet chocolate chips
• 2/3 cup unsalted butter, softened
• 2 cups granulated sugar
• 1 tsp. vanilla
• 4 eggs, graded “large”