Garlic Mushrooms Cauliflower Skillet

Name: Garlic Mushrooms Cauliflower Skillet
Cuisine: World Cuisine
Ingredients: 4 tablespoons unsalted butter (or ghee); 1 tablespoon olive oil; 1/2 onion, chopped; 1/2 head cauliflower, cut into florets; 1 pound (500 g) mushrooms, cleaned; 2 tablespoons low sodium vegetable stock; 1 teaspoon fresh thyme leaves, chopped; 2 tablespoons fresh parsley, chopped; 4 cloves garlic, minced; 1/2 teaspoon salt and pepper, or to taste