Double Chocolate Skillet Brownie (Gluten-Free, Vegan, Allergy-Free) | Strength and Sunshine @RebeccaGF666 A Double Chocolate Skillet Brownie for one! Gluten-free, vegan, and allergy-free, get ready to bake up a delicious chocolatey dessert right in your cast iron skillet! You can't have too many brownie recipes and one you can eat with a spoon? There's always room for that!