Preheat oven to 350*F. Line a baking sheet with parchment paper.
In the bowl of a stand mixer fitted with the paddle attachment or in a large bowl using a hand mixer, cream non-dairy butter and brown sugar together until fluffy and well combined.
8 tablespoon Non-Dairy Butter, 1 Cup Light Brown Sugar, tightly packed
Add the peanut butter and stir to combine. Then, add the non-dairy milk and vanilla and stir to combine again.
½ Cup Natural Creamy Peanut Butter, ¼ Cup Non-Dairy Milk, 1 teaspoon Vanilla Extract
Add rolled oats, flour, baking soda, and salt. Mix on low until the cookie dough has formed.
1 ½ Cup Old-Fashioned Rolled Oats, ¾ Cup Flour, ½ teaspoon Baking Soda, ¼ teaspoon Kosher Salt
Use a 3-tablespoon cookie scoop to scoop the dough onto the baking sheet, leaving at least 2 inches of space between each cookie. I like to bake 8 cookies per sheet.
Bake in a 350*F oven for 14-15 minutes or until they are just golden at the edges. Allow to cool on the baking sheet for 5 minutes before transferring the cookies to a wire rack to cool completely.
Repeat with remaining cookie dough.