Chocolate Heart Waffles - Nordic Ware

Ingredients

• 1 1/2 cups all-purpose flour
• 1/3 cup brown sugar
• 1/2 cup unsweetened cocoa powder
• 1 tsp baking powder
• 1 tsp salt
• 1/2 tsp baking soda
• 4 eggs
• 1 cup buttermilk
• 1 cup full-fat yogurt, unflavored
• 2 tsp vanilla extract
• 5 Tbsp butter, melted