I want to make a spaghetti bolognese but I am unable to eat tomato. I want to use 1/4 ground beef to 3/4 soy protein with onions and mushrooms, but not sure if there is any other option to bind the sauce together so that it's not just a pan of pasta with bits. Any ideas?
It's for a calorie counter so no special restrictions on carbs or anything but not push up the cals per portion too much, there's plenty in the beef and pasta.
(Other allergies and red-line "no" foods: fish, olive oil or anything similar to it (i.e. oily!), carrots)