Mushrooms: Dried mushrooms and wild mushrooms can be pricey. Feel free to substitute with cultivated mushrooms.
Spice it up: If you like heat in your sauce add some red pepper flakes, 1/4 of a tsp at a time.
Pasta Sauce: Substitute with another tin of tomatoes and add 2-3 tbsp tomato paste to the mix.
Sausage: Substitute with soy based Tofurky Sausage if it is easier to find than the Field Roast.
Nutritional yeast: For a cheesy taste and added Vitamin B-12, add 1/2-3/4 cup at the end of the cooking time.
Blending: I like my pasta sauce blended before I add the mushrooms and sausage, but feel free to leave it chunky if that is your preference.
Fresh Basil: Chop and sprinkle fresh basil on top of plated sauce.
Freezing: Freeze the leftovers for later. Rule of thumb is one cup of pasta sauce per person. Thaw, if you remember to take it out in time, and heat up gently on the stove.