Step 1

Preheat oven to 350°.

Step 2

In a medium bowl beat brown sugar, mayo, egg, and vanilla for about 2 minutes. (You can use a hand-held mixer or stand mixer, but grandma recommends doing it by hand.) Set aside.

Step 3

In a large bowl, combine oats, flour, cinnamon, and baking soda.

Step 4

Slowly add the mayo mixture to the oat mixture and stir by hand until just combined.

Step 5

Stir in chocolate chips. (I save a few to place on top before baking)

Step 6

On prepared baking sheets, drop dough by level tablespoonfuls, 3-inches apart. (they will spread some)

Step 7

Bake 8-10 minutes or until golden.

Step 8

Cool cookies on a wire rack.