Preheat the oven to 350 degrees. In a sauté pan, heat the olive oil. Sauté the pancetta for 1 minute. Add the onions and shallots, sauté for 2-3 minutes. Add the hearts and garlic and continue sautéing for 2 minutes. Add the cream. Season with salt and pepper. Stir in the basil and lemon juice. Remove from the heat and cool. Spread the artichoke mixture on the bottom of the tart pan. Sprinkle the cheeses over the mixture. Bake for 15-20 minutes or until the cheeses have melted and are golden brown. Spoon a pool of the sauce in the center of the plate. Place a slice of the tart in the center of the sauce. Garnish with grated cheese and basil.
Yield: 8 servings