Gluten Free Chocolate Chip Oatmeal Bars

This is one of my husband's favorite recipes from his mom.  Before being diagnosed with Celiac Disease I used to make these all the time but never thought to convert them to a gluten free version until today.   Chuck full of chocolate chips and oatmeal with a touch of cinnamon, these are once again on our family's list of favorites!

Gluten Free Chocolate Chip Oatmeal Bars

3/4 cup oil
1 cup brown sugar
1/2 cup white sugar
1 egg
1/4 cup milk
2 teaspoons vanilla
1 teaspoon baking soda
3/4 teaspoon salt
1/2 teaspoon cinnamon
1/2 teaspoon xanthan gum
2 cups gluten free quick oats
2 cups gluten free flour mix
2 cups chocolate chips (semi-sweet or milk)

Preheat oven to 350 degrees Fahrenheit and spray a 9X13 cake pan with cooking spray.  Combine oil, sugars, egg, milk and vanilla in a mixing bowl and mix on medium for 1 minute.  Add the dry ingredients except for the chocolate chips and mix until just combind.  Stir in the chocolate chips and spoon dough into the prepared pan spreading to the edges.  Bake at 350 degrees for 20-25 minutes.  Cool slightly before cutting into bars.