Skillet Zucchini and Mushrooms

Name: Skillet Zucchini and Mushrooms
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Cuisine: American, Italian, Mediterranean
Ingredients: 1 tablespoon olive oil; 3 tablespoons butter (divided); 2 small zucchini (cut into thin, half moon slices); salt and black pepper (to taste); 1 small yellow onion (finely diced); 1 pound small button mushrooms (cleaned and patted dry); 3 to 4 cloves garlic (minced); 2 teaspoons fresh chopped herbs, use what you have on hand (or use 1 teaspoon dried herbs (thyme and oregano are great in this dish)); ¼ cup vegetable broth; chopped fresh parsley (for garnish); grated parmesan (for garnish)