Spread each side of the bread roll with Spinach Parmesan Dip, add turkey slices, chipotle cheddar slice then sliced mushrooms and onions. When the cheese melts you want the mushrooms and onions to be smothered in cheese.
Spread garlic butter on outside of the Ciabatta bun and toast in the panini press or pan until toasted on each side and the cheese has melted.