Prepare the pepper filling. Fry the carrots and onions in a frying pan with vegetable oil for 5 minutes. Add the champignons to the pan. Mix the rice, fried vegetables, minced meat and spices.
Stuff the peppers and cook them in a multicooker. Stuff the peppers with the stuffing and put them in the multicooker bowl. Add tomato paste and fill the bowl halfway with boiled water. Select the "Stewing" mode for 45 minutes.