Chocolate Cream Boat Cakelets

INGREDIENTS

• 1 cup all-purpose flour
• 3/4 tsp. baking soda
• 3/4 tsp. salt
• 8 Tbs. (1 stick) unsalted butter, melted
• 1 egg
• 1 tsp. vanilla extract
• 1 cup sugar
• 1/3 cup Dutch process cocoa powder
• 2/3 cup boiling water
• 2 egg whites
• 2/3 cup sugar
• 1/4 cup light corn syrup
• Pinch of salt
• 1/2 tsp. vanilla extract