Making Lobster Thermidor with Parmesan Crust is easier than it sounds. Follow these simple steps to create this delightful dish:

1. Cook the Lobsters: Bring a large pot of salted water to a boil. Add the lobsters and cook for about 8-10 minutes until they turn bright red. Remove them from the pot and let them cool.
2. Prepare the Lobster Meat: Once cool, carefully remove the lobster meat from the shells. Chop the meat into bite-sized pieces and set aside. Reserve the shells for later use.
3. Make the Sauce: In a skillet, melt the butter over medium heat. Add the shallots and garlic, sautéing until translucent.
4. Add Cream and Seasoning: Pour in the heavy cream, stirring in the Dijon mustard and tarragon. Allow the mixture to simmer until it thickens slightly, about 5 minutes.
5. Combine Lobster and Sauce: Stir in the chopped lobster meat, then season with salt and pepper to taste. Remove from heat.
6. Preheat the Oven: While the sauce cools slightly, preheat your oven to 400°F (200°C).
7. Prepare the Filling: In a bowl, mix the breadcrumbs with half of the Parmesan cheese. This will create a crunchy topping.
8. Fill the Lobster Shells: Spoon the lobster mixture back into the reserved shells, packing it well.
9. Top with Cheese and Breadcrumbs: Sprinkle the remaining Parmesan cheese and breadcrumb mixture evenly over the filled lobster shells.
10. Bake: Place the stuffed lobster shells on a baking sheet and bake for 15-20 minutes, or until the topping is golden brown and crispy.
11. Garnish and Serve: Remove from the oven and let cool for a few minutes. Serve with lemon wedges on the side for added zest.

These steps will guide you in creating a stunning Lobster Thermidor with Parmesan Crust that will surely impress your guests.