Step 1
Place the mushrooms into the pot of a slow cooker.
Step 2
Melt the butter, and stir in Hidden Valley Original Ranch Salad Dressing and Seasoning Mix. Pour over the mushrooms, tossing to coat. Sprinkle the cheese on top.
Step 3
Cover the pot, and set the heat to low. Cook for 4 hours. Serve warm, topped with the chopped chives.