Potatoes are washed and cut into cubes. Placing them in the tray by looking to fill it. In a cup Melt the butter with broth and a little water. Pour the liquid over the potatoes and stir. Add frozen vegetables and inserted into the oven. Once you see that the potatoes and vegetables are ready can add sausage - diced or shredded. Leave for 7-8 minutes and add the feta cheese and cheese and olives. Turning off the oven just before the cheese to melt. * You can choose a combination of feta cheese and melting feta cheese or feta cheese and cheese.