In a skillet , heat oil. Add onion & cook for 2 minutes until it starts to soften. Add reserved mushroom stems, garlic, oregano, paprika, sun-dried tomatoes, red peppers & zucchini. Cook for 2 minutes while stirring with a spatula. Add wine (or chicken broth) & allow to bubble for 2 minutes then add vegetable broth, salt & pepper. Bring to a boil & simmer for 5 minutes.