Preheat oven to 350°F. Grease the bottom and sides of an 8x8 or 9x9-inch pan with coconut oil.
In a large mixing bowl, whisk together almond butter and maple syrup until smooth.
Add milk, eggs, and vanilla. Whisk until well combined.
Stir in oats, almond flour, flax seeds, baking powder, cinnamon, and salt until fully incorporated.
Fold in the chocolate chips.
Spread batter evenly into the prepared pan.
Bake for 25–30 minutes, until the top is lightly golden, slightly crackly, and a toothpick inserted in the center comes out clean.
Cool for 10 minutes before slicing into squares. Serve warm or cold, plain or with toppings like fresh berries, yogurt, or an extra drizzle of nut butter.