Instructions: Combine all ingredients except polenta in a food processor, add 1/4 cup ice cold water and process for about 15 seconds or until mixture just comes together. Roll out mixture on surface sprinkled with polenta to a round about 3cm thick and about 32cm in diameter. Place on an oven tray and turn over a 1cm edge to form a rim. Cover and freeze for 20 minutes. Remove from freezer and sprinkle Gruyere over surface. Top with bocconcini and eggplant. Brush with a little olive oil, season to taste and bake at 200^C for 45 minutes. Top with rocket and cut into wedges to serve.

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