INGREDIENTS
2/3 cup
Sweet-potato puree
1
Egg, large
1/4 tsp
Baking powder
2/3 cup
Cocoa powder, natural unsweetened
1/4 tsp
Salt
1 cup
Sugar
1 1/2 tsp
Vanilla extract
1/2 cup
Whole-wheat pastry flour
1/4 tsp
Instant coffee, powder
4 tbsp
Butter, unsalted