Preheat oven to 375 F.

In a Vitamix blender, add vanilla, honey/agave, garbanzo beans, and baking powder. Blend until smooth.

Transfer blender contents to medium-sized bowl. Add oat flour and sugar. Stir well. If dough is still very sticky, add additional oat flour (1/4 cup at a time) until dough easily forms a large ball.

Place dough on floured surface (I used additional oat flour) and with a floured rolling pin, roll dough until about 1/4 inch thick. Cut cookie shapes as desired and place on lightly sprayed cookie sheet. Bake for 15 to 17 minutes until slightly golden. Remove and allow to cool before frosting.