This is a great appetizer served with toast points or artisinal bread, and ice cold white wine. Part of the secret to a well-prepared appetizer is to serve it in limited quantities. It should trigger your appetite without satisfying it. It should leave you wanting more.
Place a medium skillet over high heat and melt the butter, being careful not to let it brown.
Add the morels and trumpets royales and sauté for a few minutes, or until the mushrooms are wilted.
Add the thyme and the shallots and continue to sauté until the shallots are translucent.
Add the Madeira and reduce until very little moisture is left in the pan. Season with salt and pepper and transfer to a food process. Puree until smooth.
Add the sour cream and season to taste.
Place in a crock and serve..