This is pretty easy to throw together, and like the Pecan Dulce de Leche Cookies, you roll this dough into a log, refrigerate, slice, and bake. And these were pretty good, actually, though not terribly shortbready in the end, but nice nonetheless.
1 cup unsalted butter, softened
3 tbsp each granulated sugar and packed brown sugar
1/4 tsp salt
1/2 tsp vanilla
1 1/4 cups flour
3/4 cup quick oats
1/4 cup cornstarch
3/4 cup chocolate chips
Cream butter, sugars, salt, and vanilla until light. Stir in flour, oats, and cornstarch until just combined. Gently fold in chocolate chips.
Divide dough in half; roll into 9" long log on waxed paper or plastic wrap. Refrigerate until firm, about 1 hour, or overnight.
Using a serrated knife (trust me, use an actual serrated knife, OK?), cut each roll into 18 pieces and place about 1/2" apart on a cookie sheet. Bake at 275F until firm and bottoms are lightly browned, 40 - 45 minutes (I baked them at 350F for 10 - 15 minutes as I couldn't be bothered waiting 40 minutes...). Cool.