Ingredients

• 1 egg yolk
• 3/4 more on
• 1 1/2 cup maple syrup
• 1/2 cups whipped maple syrup in bowl
• 1/2 cup butter
• 1/2 cup softened butter
• 1/2 cups powdered sugar
• 1/2 tsp cinnamon
• 1/8 tsp allspice
• 1/8 tsp nutmeg