Cook the pasta and drain
In a pan on medium heat add the onion and olive oil, toss the pasta, the tomato sauce and quarter cup of water
In another pan, stir the ground beef with the mixed chopped vegetables and spices
Prepare the yogurt and add garlic on top and mix them. In the serving dish, the first layer add the pasta and then add the yogurt and mix it a little with the pasta.
Then add the ground beef with vegetables on the surface of the dish and garnish. You may prefer to add some lemon juice