In a medium skillet, melt butter over medium heat. Add shallots, and cook until fragrant and nearly translucent, about 2 minutes. Add lobster, and cook until meat is opaque, about 5 minutes.
Transfer cooked lobster to a large bowl, and let cool slightly. Add eggs, mustard, cayenne pepper, salt, black pepper, and mayonnaise; gently toss.
Fill shells with lobster mixture. Garnish with thyme and micro greens, if desired. Serve immediately.
Recipe by Victoria at https://victoriamag.com/lobster-salad-in-puff-pastry-recipe/