Note
For the broccoli and mascarpone cream
1. Cut the broccoli head at the base to remove the stalk.
2. Finely chop half of an onion.
3. Remove from the hob, carefully pour the mixture into a blender and purée until smooth, about 1 minute.

4. Pour the mixture into a bowl.
For the caramelised onions
1. Preheat your oven, aiming for 430 °C (800 °F) on the baking stone.
2. Peel and slice the red onions – aim for a thickness of about 0.

3. When the oven has reached the desired temperature, place the pan inside and cook for 3 minutes, stirring regularly until the onions are tender and lightly browned.
4. Remove the pan from the oven and let the onions cool to room temperature; set aside.
For the pizza
1. Place the dough ball on a lightly-floured work surface.
2. With the back of a spoon, gently and evenly spread about 45 grams (about 3 tablespoons) of broccoli and mascarpone cream over the dough.
3. Open your can of tuna and drain it of excess liquid with a colander.

4. Launch the pizza into the oven and bake for approximately 2 to 3 minutes, turning every 20 seconds or so with a turning peel for even cooking.
5. Remove the pizza from the oven and add the basil on top.