Boss Sauce: Mushroom and Veal Sauce

"Gratifying mushroom and veal sauce: first simmered with tomatoes, peppers and onions, garnished with a drip of heavy cream, and then baked in foil (parchment paper) using a water bath. Prep time: 20 mins Cook time: 70 mins Total time: 1 hour 30 mins Serves: 6 Ingredients 3 tablespoons butter 1 tablespoon oil 1 yellow onion (large, diced) 16 ounces veal (diced into smaller squares) 2 bell peppers (diced) 10-12 ounces portabello mushrooms (diced) 1-2 tomatoes 1 teaspoon salt ½ teaspoon ground pepper ½ teaspoon sugar 6 ounces heavy cream Foil or parchment paper When ready to serve, give each person a bag (careful, it's hot!) on a plate, and let them open it on their own."