Bite into bakery-style gluten-free apple crumb muffins that are also easy to make! These moist muffins are loaded with chunky bites of apples, topped with a thick layer of cinnamon brown sugar crumb topping, and drizzled with a sweet vanilla glaze."
For best results, make sure all the ingredients are room temperature, especially the butter, eggs, yogurt or sour cream. Otherwise the batter will curdle slightly, and not blend as homogeneously.