In a medium bowl, whisk together all-purpose flour, baking powder, and salt. Set aside.

In a large mixing bowl, combine peanut butter, granulated sugar, maple syrup, almond milk, and vanilla extract. Stir well until thoroughly combined.

Gradually add the dry ingredients to the peanut butter mixture, stirring until a thick dough forms. You may need to use your hands to fully incorporate the ingredients.

Scoop the dough using a cookie scoop or a spoon, then roll into balls. Place on the prepared baking sheet about 2 inches apart.

Create a crisscross pattern. Using a fork, press down gently to flatten each cookie in a crisscross pattern. This creates that classic look and helps cookies bake evenly.

Bake for 10-12 minutes until edges are golden and set. Centers will look slightly underbaked. Let cool on a baking sheet for 5 minutes before transferring to a wire rack.