Whisk the gluten-free oats, 1:1 flour, corn starch, baking soda, xanthan gum (if needed), and salt together in a small bowl.
2 ½ Cups Gluten-free Old Fashion Oats, 1 ½ Cups Gluten-free 1:1 Flour, 2 ½ Tablespoons Corn Starch, 1 Teaspoon Xanthan Gum, 1 Teaspoon Baking Soda, ½ Teaspoon Salt
In a separate bowl, whisk together the sugar, brown sugar, and melted butter.
½ Cup Sugar, 1 Cup Brown Sugar, ¾ Cup Melted Butter
Add the egg, vanilla, and molasses to the butter and sugars.
2 Large Eggs, 1 Teaspoon Vanilla, 1 Tablespoon Molasses
Stir the bowl of dry ingredients into the bowl of wet ingredients.
Fold in the soaked raisins.
Chill the dough for two hours.