Preheat the oven to 350℉
Sauté the garlic with the sausage, breaking the sausage into small pieces as it cooks. Drain and set aside.
Clean the mushrooms and remove the stems.
Mix the melted butter and garlic powder in a gallon-size zip-top bag. Add the mushrooms and shake until they're coated in butter. Place them in a 9x13-inch baking dish.
Combine the sausage, cream cheese, cream, lemon juice, Worcestershire sauce and 1 cup of the Swiss cheese.
Spoon the mixture into the mushrooms and top with the remaining Swiss cheese.
