In a bowl drive one egg, add kefir, salt, sunflower oil, stir. Sift rice flour, stir, sift with it and baking powder. You can take wheat flour, then the buns will no longer be gluten-free, but it will be delicious.
Then gradually add buckwheat flour and knead uncool dough. Buckwheat flour can be very different in different regions, so I wrote the approximate weight, you can leave more or less, the most important thing is to add gradually!
I have from this test broke a 9 buns. You can do the size of the slightly more or slightly less. Cut a small amount of dough, knead hands into a cake, put inside 1 tsp cottage cheese and knead. The dough does not want to be molded, because in buckwheat flour there is no gluten, that is, gluten, we sculpt about as plasticine)
Take the egg, shake with a fork, add the milk and roll the bun. Then immediately roll in a mix of sunflower and pumpkin seeds and spread on a baking sheet, covered with parchment. We do this with all the buns.
Bake the buns in a preheated 200 degree oven for 30 minutes. In prescription was referred 20, oven have all different, can you have faster will be baked. I strongly recommend to roll buns in seeds, they give them a unique taste. Enjoy your meal!