Heat the grill to high. Put the skillet over a high heat.
Once the skillet is hot roll out the first pizza base and place in the skillet. Spread with 2 cloves of garlic. Put half the mushrooms, thyme leaves, mozzarella and taleggio on the base spreading evenly. Carefully lift the base with a spatula and check that it's browned on the bottom.
Place under the grill for 10-15 minutes keeping a close eye on it as grills can vary massively. Once the cheese is melted and the dough has browned you're ready to serve. Repeat with the second pizza. Drizzle both with truffle oil before serving.
Nutrition information is an estimate and will vary depending on the exact ingredients used.