Make the Pistachio Cream:
Place the pistachios in a small food processor and blend until finely ground. Add the ricotta, olive oil, and salt, blending until smooth and creamy. Adjust the consistency with a little more olive oil or warm water if needed. Set aside until ready to use.
Divide the raw pizza dough into six portions and roll each out to around 3mm thick.
AT THE GRILL:
Prepare the barbecue for direct heat, approx. 180-230°C. If using a charcoal barbecue, you need ½ chimney starter of lit briquettes.
Heat a Slate Grill, or griddle over medium-high heat, brushing lightly with oil.
Cook each flatbread for 2-3 minutes per side until dark blisters appear and the bread is soft yet slightly crisp at the edges.
Keep warm while you prepare the filling.
Place the mortadella slices on the hot griddle or slate and sear lightly for 30–45 seconds each side until fragrant and gently caramelised.
Assemble the Sandwiches:
Spread pistachio cream over three of the flatbreads.
Layer with mortadella, mozzarella, and fresh rocket.
Top with the remaining flatbreads and press gently.
Return each sandwich to the griddle or slate and cook for 2–3 minutes per side until warmed through, lightly golden, and the filling just begins to melt together.
Slice in half and serve warm.
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