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The Fast 800 Easy's Low-carb Portobello ‘pizzas’

PREP 10 mins
COOK 10 mins


This is adapted from a particularly popular recipe in our Fast 800 online program. With a wide Portobello mushroom as a base and a delicious tomato and mozzarella topping, it has all the flavour of a traditional pizza but only a fraction of the calories.
  • 2 tbsp extra-virgin olive oil, plus extra for greasing
  • 2 garlic cloves, peeled and crushed
  • 1 tsp dried oregano, plus some fresh oregano leaves (optional), to serve
  • 4 Portobello or large flat mushrooms (each around 90g)
  • 3–4 tbsp tomato purée
  • 6–8 cherry tomatoes, sliced
  • 100g ready-grated mozzarella
  1. Preheat the oven to 200°C/fan 180°C/Gas 6 and lightly grease a baking tray.
  2. Mix the olive oil, garlic and oregano in a small bowl.
  3. Place the mushrooms on the tray, stalk side up, and spread each one thickly with the tomato purée. Top with the sliced tomatoes and drizzle with the olive oil mixture. Sprinkle with the mozzarella and season with a little salt and plenty of ground black pepper. Bake for 8–10 minutes, or until the cheese is melted and has started to brown.
  4. Serve sprinkled with fresh oregano leaves, if using, and lots of green vegetables or a large salad.



Add extra protein by topping each mushroom with anchovy fillets, chorizo or salami. But don’t forget to add the extra calories.


PER SERVING 287 cals | PROTEIN 15.5g | CARBS 6g | FAT 22g | FIBRE 3g

The Fast 800 Easy


Following their bestselling Fast 800 Recipe Book, Dr Clare Bailey and Justine Pattison return with a fabulous new cookbook, featuring super-simple recipes to enable you to eat well with minimum prep time on your fasting days.

All of the dishes in this book are based on the Mediterranean style of eating now proven to revolutionise your health, and many can be thrown together from freezer or store-cupboard staples. There are numerous vegetarian options, plus simple ways to expand meals for non-fast days or when you are eating with friends or family.

With everything from salads and wraps to winter stews and curries, Fast 800 Easy will help you rustle up delicious, nutritious meals in minutes – food that tastes so good you won't feel the low calorie count.

‘The Fast 800 approach represents a new and highly effective way to help people lose weight and keep it off, fast and safely. I hope you enjoy these recipes as much as we do.’ Dr Michael Mosley