Tuna-casserole Supreme

Ingredients

60 gr onion
65 gr green pepper
100 gr celery
75 gr butter
1 package cheddar cheese soup
120 ml milk
80 gr mushrooms
3 gr salt
140 gr green olives
6 1/2 tuna
150 gr corn flakes
60 gr almonds
2 casserole

Instructions

on top of casserole. Bake, uncovered, 25 minutes