Method
1. Pre-make and chill the mustard shortcrust pastry before beginning this tart recipe
2. Toss tomatoes in a baking dish with plenty of olive oil and salt
3. Do the same with the un-peeled shallots and garlic in another baking dish
4. Roast - 15 min, 180°C
5. Cool completely
6. Drain the juices away from tomatoes and peel the shallots and garlic
7. Increase oven temperature to 200°C
8. Roll the pastry out on a floured Silpat mat
9. Place parmesan and gruyere into the Thermomix bowl
10. Chop with MC fitted - 6 sec, speed 8
11. Remove from bowl
12. To make pistachio oil, place all ingredients into the Thermomix (no need to clean after the cheese)
13. Blend with MC fitted - 10 sec, speed 8
14. Assemble the tart by spreading a small amount of ricotta or mascarpone on the pastry leaving about 2 cm circumference around the edges
15. Sprinkle with about half of the milled cheese and a few thyme sprigs and the lemon zest
16. Arrange the roasted tomatoes to fill the tart centre, add the shallots and garlic
17. Finish with remaining cheese and about half of the pistachio oil
18. Transfer to paper lined baking sheet
19. Bake until golden brown - approx 20-25 min, 200°C, low rack
20. Bake - 5 min, 250°C, middle rack with grill function
21. Serve hot with the remaining thyme sprigs and pistachio oil