Finely chop the onion and garlic.
Place the minced meat and buckwheat in a deep bowl.
Mix the minced meat and buckwheat.
Form small round buckwheat patties, place in a baking dish and bake for 20 minutes.
Place butter, chopped onion and garlic in a heated frying pan.
Fry the onion and garlic for 3-5 minutes.
Add sifted flour to the onion and garlic.
Pour warm boiled water into the pan.
Add sour cream to the sauce.
Stir the sauce and simmer for 2-3 minutes.
Remove the buckwheat pancakes from the oven.
Serve the grechaniki hot with sour cream sauce, green onions and finely chopped tomato.