
Chewy & soft peanut butter oatmeal cookies with chunks of walnuts.
Preheat the oven to 350°F. Line a large baking sheet with parchment paper.
In a large mixing bowl, use a handheld mixer (or stand mixer with paddle attachment) to cream together the room temp. butter, sugars, and peanut butter until light and fluffy (about 3-4 minutes). On low speed, beat in the milk and vanilla extract.
Add oats, flour, baking soda and powder, cinnamon, and salt. Combine on low speed until a soft dough forms. Fold in walnuts.
Use a ~1.5 tbsp cookie scoop to distribute dough onto baking sheet. Slightly press down each mound with the palm of your hand. Bake cookies for 11-12 minutes until light brown with crisp edges. Let cookies cool for 10 minutes before transferring to a wire cooling rack.