Preheat oven to 350* F. Line 2 cookie sheets with parchment paper.
In a large bowl using a hand mixer, cream the vegan butter and bown sugar until smooth and creamy. Then, add the non-dairy milk and vanilla and mix on low until combined.
8 tablespoon Non-Dairy Butter, 1 Cup Light Brown Sugar, tightly packed, 3 tablespoon Non-Dairy Milk, 2 teaspoon Vanilla Extract
Add the rolled oats, King Arthur measure for measure gluten-free flour blend, cinnamon, baking soda and salt. Mix on low until combined.
1 ½ Cups Old-Fashioned Rolled Oats, 18 tablespoon King Arthur Measure for Measure Gluten Free Flour, 1 teaspoon Ground Cinnamon, ¼ teaspoon Kosher Salt, ½ teaspoon Baking Soda
Use a 3-tablespoon cookie scoop to scoop 8 mounds of dough onto each lined baking sheet. Be sure to leave at least 2 inches of space between each cookie dough ball. Bake one tray at a time in a 350* F oven for 12-14 minutes. The cookies should be golden brown around the edges.
Allow the cookies to cool on the baking sheet for 10 minutes, then move to a wire cooling rack to cool completely.