Place all mushroom ingredients, aside from the mushrooms, into your food processor, and mix until all ingredients are completely combined.
Using a small spoon, fill each mushroom with your cream cheese mixture.
Heat a large skillet over medium-high heat and melt your margarine. Once the butter is melted add your garlic and cook for about 2-3 minutes. You want the garlic slightly browned, but avoid burning.
Add the wine. After approximately 3 minutes place your mushrooms (stuffed sides up) in the skillet and lower temperature to a light simmer. Place lid on skillet and simmer for about 10 - 15 minutes, until mushrooms are cooked through/soft.
To serve, ladle broth onto your serving dish (a boat or deep plate works well), and place mushrooms on top.