Prebake pie shell for 5 minutes at 200ºC .
Mix ham, cheese and basil leaves.
Spread mustard on bottom of prebaked pie shell. Sprinkle with ham-cheese mixture.
Beat eggs, cream and black pepper. Pour mixture over ham and cheese in pastry shell. Sprinkle with parmesan cheese.
Bake, uncovered, at 180ºC . on middle rack of oven for 30 to 35 minutes until filling is set and lightly browned. Garnish with fresh basil leaves or parsley and sliced tomatoes. Serve immediately.