Cook the bulgur in 1½ cup boiling water. Add salt and pepper. When ready add the tahini and 1 tablespoon lemon juice and stir.
Heat olive oil in a large, deep skillet. Dry the eggplant and fry for 2-3 minutes on each side until golden brown. Then spread out on a plate with kitchen paper for the oil to be absorbed. In the same pan fry the peppers for 2-3 minutes.
To make the hummus, place all ingredients in a food processor (blender) and mix until a smooth mixture is created.
Cover a small round cake tin (20cm diameter) which opens on the sides with greaseproof paper and coat with a little olive oil. Layer the base of the cake tin with bulgur and follow with a layer of tomato, a layer of eggplant and a layer of peppers. Once done, add a layer of hummus and sprinkle the feta on top. Bake in a preheated oven at 180 ° C for 25-30 minutes or until the surface turns golden brown.
Remove from the oven and leave to cool for 10-15 minutes. Open the tin carefully, and place your "cake" on a serving plate. Serve in pieces with yogurt.