Milk Chocolate Stuffed Peanut Butter Bunny Cookies

Bahan-bahan (12 porsi)

• 1 stick (1/2 cup) salted butter, at room temperature
• 3/4 cups light brown sugar
• 1/2 cup creamy peanut butter
• 2 teaspoons pure vanilla extract
• 1 egg, at room temperature
• 1 3/4 -2 cups all-purpose flour
• 1/4 teaspoon baking soda
• 1/4 teaspoon salt
• 12 ounces milk chocolate, melted
• 12 ounces white chocolate, melted
• 1 tablespoon coconut oil, melted ((optional))
• granulated sugar, for dusting ((optional))