– Then, add the egg mixture to the skillet with the mushroom cream sauce and whisk quickly to combine. – Remove from heat and add lemon zest and tarragon. – Turn on the oven broiler. – While it is heating, divide the mushrooms into the number of shells or ramekins that you will be using. – Top with the scallops and the remaining cream sauce. – Top with grated cheese. – Broil for about 5 minutes until the cheese is bubbly. – Serve immediately.