Creamy Vegetarian Pasta Sauce

Bring a large pot of lightly salted water to a boil. Add penne and cook, stirring occasionally, until tender yet firm to the bite, about 11 minutes.

Heat olive oil in a large skillet over medium heat. Add zucchini, bell pepper, mushrooms, spinach, and tomatoes. Cook and stir until vegetables have softened, 3 to 4 minutes. Add broth, sour cream, and tomato paste and stir to combine. Season with salt and pepper. Bring to a boil and remove from heat. Drain penne and mix into the sauce. Stir in parsley and basil.