Strawberries and Cream Cupcakes (Gluten Free) - Cupcake Fanatic

Ingredients

• 2 cups strawberries, hulled – use divided
• 1 cup superfine white rice flour
• 1/3 cup potato starch (not potato flour)
• 3 tablespoons tapioca starch
• 1 teaspoon xanthan gum
• 1 teaspoon baking powder
• ½ teaspoon baking soda
• ¼ teaspoon kosher or fine sea salt
• ¼ cup sour cream or Greek yogurt – at room temperature
• 1 teaspoon pure vanilla extract
• 7 tablespoons unsalted butter (1 tablespoon shy of a stick) – at room temperature
• 1 cup plus 4 teaspoons granulated sugar – use divided
• 1 large egg – at room temperature
• 2 large egg whites – at room temperature
• 1 cup cold heavy whipping cream