Drain peas and mushrooms. Cut peppers into narrow strips. Cut cheese and onions into cubes. Grease cake springform pan. Mix peas, minced meat, eggs, bread crumbs, mushrooms, onions, peppers, mustard, shish kebab sauce and cheese. Season with salt, pepper and garlic.
Pour the mixture into the cake springform pan and bake at 200 °C for 90 min. Heat gypsy sauce and whipped cream and mix together, bring to the table as a sauce to the mafia cake.