Cook pasta according to package directions. Reserve ½ cup pasta water when draining. Cook in a large pot if you don't want to use a separate pot for the remaining steps. Alternatively, cook the pasta simultaneously to remaining steps.
In a large skillet, heat 1 tablespoon olive oil. Add fennel, sauté for 5 minutes. If not using garlic infused and you tolerate garlic, sauté some minced garlic along with the fennel.
Add beef, cook until browned. Season with salt, pepper, and Italian herbs.
Stir in zucchini and bell pepper. Cook about 5 minutes, until softened.
Sprinkle the starch over the mixture, add the milk and nutritional yeast. Stir well to combine on low heat until sauce thickens.
Add the pasta and mix, add a splash of pasta water as needed.