Here is one I came up with: let me know if you like it.
1/3 C Crisco
1/3 C Butter
1 C Sugar
1 C Cake Flour
2 1/2-3 C Oat Flour
2 T Baking Powder
1 t Salt
Cream your fat and Sugar until creamy. Add in the Vanilla and Eggs (one at a time) and Milk.
Combine all dry ingredients omitting about 3/4 C of the Oat Flour.
Sift dry ingredients with your whisk then slowly add to the wet ingredients.
Now if needed add the 3/4 C oat flour your omitted slowly until you get the desired consistency. I like it to be fairly sticky still. You definitely do NOT want to over flour these, they are already drier because of the oats.
Then dump it out onto Saran wrap, fold up and put in fridge for 30 min.
Roll out- Cut shape- Bake 350 6 min.
These will be different from what you are used to in a sugar cookie- dryer, flakier, but good flavor!
Frost and it will be even yummier.
Note: 1 1/4 Cup Oats after you grind it will equal 1 C Oat Flour