You don't need the milk. Kefir is liquid enough.
Grease a 9" pie form
Preheat the oven to 350 degrees F
Beat kefir and sugar
Add the egg and mix till fluffy.
Now, add the flours, baking powder and salt. Mix well.
Full into greased form. Press strawberries down, and sprinkle with sugar.
Feel free to experiment with this recipe. I got it from thenotsosupermama.com and changed it a bit.