Low FODMAP Girl Scout Do-Si-Do Copycat Recipe - FODMAP Everyday

Ingredients

• 1/2 cup (1 stick; 113 g) unsalted butter, (at room temperature)
• 3/4 cup (160 g) firmly packed light brown sugar
• 1/4 cup (50 g) sugar
• 1 teaspoon vanilla extract
• 1 large egg, (at room temperature)
• 1 ¾ cups (173 g) old-fashioned rolled oats
• ¾ cup (109 g) low FODMAP gluten-free all-purpose flour, ( such as Bob’s Red Mill 1 to 1 Gluten Free Baking Flour)
• 1/2 teaspoon baking powder; (use gluten-free if following a gluten-free diet)
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 cup (134 g + 2 tablespoons) smooth no-stir style peanut butter
• 2 tablespoons unsalted butter, (at room temperature)
• 1 cup (226 g) sifted confectioners’ sugar
• 1/2 teaspoon vanilla extract
• 1/8 teaspoon salt
• 3 to 4 tablespoons lactose-free milk ( or heavy cream; whatever you have on hand)
• 4- ounces (115 g) semisweet chocolate, (preferably 50% cacao, melted; optional)