Tuna bread pudding

Ingredients

• 4 slices of bread (cubes)
• 3 cups of milk
• 2 eggs (beaten)
• 2 teaspoons salt
• Some shredded cheddar cheese
• A can of tuna in oil (drained & mashed)
• 1 tomato (chopped)
• 1 green pepper (chopped)
• 1 onion (chopped)
• a little butter cubes