This flavorful red sauce is a great way to use up the leftover vegetables you have in your refrigerator—or to sneak some veggies into any picky mouths you might have in your household.
Clean the mushrooms, brushing off any dirt and trimming the base of the stems. Clean the remaining vegetables and set aside (there is no need to peel the carrots).
Step 2
Although you can finely chop the vegetables by hand, it is much faster to use a food processor. Chop or process the mushrooms and set aside. The rest of the vegetables can be chopped or processed together, and set aside in a separate bowl.
Step 3
Using a wide, deep saucepan, heat 2 tablespoons olive oil over medium heat. Add the mushrooms, season lightly with kosher salt, and cook until well-browned and all of the water has cooked out. (If you are adding Italian sausage, you can move to the next step while the mushrooms are cooking).Add the remaining vegetables, season again with salt, and stir. Again, cook until browned and any water has evaporated.
Step 4
While the vegetables are cooking, brown the Italian sausage in a separate skillet. Pour off the fat, and set aside.
Step 5
Add remaining olive oil to the pan, and add the garlic and crushed red pepper, stirring for 1-2 minutes or until fragrant. Do not allow the garlic to brown. Add the tomato paste and continue stirring for 2 minutes, allowing it to caramelize. Add the white wine, and cook for 2-3 minutes.
Step 6
Add the San Marzano tomatoes, and stir to combine. If you have fresh tomatoes sitting around that you need to use up, you can throw these in, too.
Step 7
Simmer on medium-low, bubbling very gently (tomato sauce splatters and burns easily, so be careful to keep your pan from getting too hot).
Step 8
Your sauce will be ready in about 30 minutes, or when most of the water is cooked off and you have a nice, thick sauce. However, the longer you let it cook, the deeper and richer the flavor becomes. I like to let mine simmer gently for several hours.
Step 9
Add salt to taste. I like a little sweetness in my sauce to offset the acidity of the tomatoes, so I usually add 1-2 teaspoons balsamic vinegar. Others add a little sugar. Some add a Parmesan rind to the last stage of cooking. Fresh herbs, like basil, also add a nice flavor, so experiment and see what you like.
Step 10
This sauce will have some texture to it, depending on how finely you have chopped your vegetables. If you prefer a smooth sauce, purée with an immersion blender. Now add the Italian sausage, if using, and stir to combine. Allow to simmer gently for 20 minutes, allowing the flavors to marry.