100% Whole Grain Pancake Mix

I really thought I had this recipe on my blog somewhere but can't find it! So it may be a duplicate...

100% WHOLE GRAIN PANCAKE MIX

3 c. whole wheat flour
3 c. oat flour
2/3 c. sugar
2 Tbsp. baking powder
2 Tbsp. baking soda

Combine all ingredients. Store in an airtight container.

To make:
1 c. pancake mix
3/4 c. milk
1 egg, beaten
Fruit, nuts, and/or chocolate chips (optional)

Mix all ingredients in a large bowl. Cook on medium heat.

NOTE: These pancakes will be darker than ones made with white flour! I use egg substitute and rice milk and they come out good :)