Instructions: Place mince, onion, oregano and tomato paste in a large mixing bowl and combine thoroughly. Divide mixture into 6 equal portions and shape into patties 1 1/2cm thick. Cut cheese into 3cm squares, about 1cm thick. With your thumb, make a cavity in the top of each of the burgers. Place cheese in cavity and smooth mince over cheese to enclose completely. Refrigerate until required.

To make Pesto: Place basil, Pinenuts, Parmesan and garlic in a food processor or blender. blend at medium speed, adding oil in a thin stream until smooth. Transfer to a small bowl, cover with plastic wrap and store in refrigerator until required.

Heat grill or frying pan and brush lightly with oil. Cook burgers over medium-high heat for 8 minutes each side, turning only once. Serve on toasted focaccia bread with sliced tomato and Pesto.

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