Maple-Cinnamon Oatmeal Cookies

old fashioned rolled oats 1/2 cup of flour 1/2 tsp fine sea salt 1/8 tsp baking soda 1 tsp cinnamon 6 tbsp unsalted butter, softened 1/3 cup of brown sugar 1/4 cup of white sugar 2 tbsp real maple syrup 1 small egg 1/2 tsp vanilla extract