Place the sliced mushrooms on a rimmed baking sheet. It is okay if they overlap a little bit because they will shrink as they cook.
In a mixing bowl combine the melted butter, oil, vinegar, garlic, herbs, salt and pepper. Mix well.
Drizzle the mixture over the mushrooms and toss to coat.
Roast the mushrooms 10 minutes, turn and bake an additional 5-10 minutes until they reach your desired tenderness.
Garnish with parmesan and additional herbs if desired.
Notes
Net carbs are 4.4 g per serving
Serving: 1/2 cup (Approximate-it will depend on how much your mushrooms reduce as they cook), Calories: 113kcal, Carbohydrates: 5.6g, Protein: 3.3g, Fat: 8.2g, Cholesterol: 15.3mg, Fiber: 1.2g, Sugar: 2.8g