Preheat the oven to 180°C
Rinse the mushrooms and peppers under the tap
Dice the pepper and mushrooms into small 1cm pieces and leave to one side
Slice the olives sideways and add to the pepper and mushrooms
Using a serrated knife, slide the bagel through the middle so you have equal sized pizza bases
Cover the baking tray with parchment paper / tin foil and place both bagels on top
Add 1 tbsp of tomato puree to each bagel. Use the back of the tablespoon to generously spread over the bread
Grate the cheese on the chopping board making sure you get all the loose cheese inside of the grater
Add the grated cheese to the bagel on top of the tomato puree
Divide the chopped pepper, mushrooms and olives into two piles and a pile to a bagel slice
Sprinkle on the mixed herbs with finger and thumb
Place in the oven for 15 minutes until the cheese has melted
Using a tea towel / oven glove, remove the baking tray and let cool for 5 minutes