To make Osso Buco: Heat olive oil and butter in large pot over medium heat. Add celery, carrots, onion, bay leaves, thyme, oregano, and parsley, and cook 10 to 15 minutes, or until vegetables are tender. Add garlic, and saute 2 to 3 minutes. Stir in tomatoes and tomato paste, and cook 5 minutes. Add meat substitute, broth, wine, and lemon zest, and season with salt and pepper. Simmer 20 minutes, or until sauce thickens and meat substitute is heated through.

To make Asparagus-Mushroom Orzotto: Heat olive oil and butter in large saucepan over medium heat. Add onion and saute 10 minutes, or until soft. Add garlic, and saute 2 minutes. Add asparagus and mushrooms, and saute 5 to 7 minutes, or until mushrooms start to release their juices. Add 1/2 cup orzo and cook 3 to 5 minutes, or until lightly browned. Add remaining orzo, and cook 3 minutes more, or until all pasta bits are browned. Stir in 1/2 cup vegetable broth, parsley, and thyme, and simmer 2 to 3 minutes, or until orzo has absorbed all liquid, stirring often. Continue adding broth to orzo 1/2 cup at a time until all liquid is absorbed and orzo is al dente. Remove from heat, and stir in Parmesan, if desired. Serve with Osso Buco.