Preheat oven to 350 degrees F.
Prepare six small ramekins or six wells of a large-cup muffin pan. Spray ramekins or muffin pan with nonstick spray and line each interior with two slices of prosciutto, allowing some of the prosciutto to overlap.
In a large bowl whisk eggs, milk, spinach and sour cream, season with sea salt and pepper. Fold in lobster meat, onion, spinach and 1 cup cheese, mix well.
Carefully spoon the egg mixture into each cup filling two-thirds of the way up, allowing room for the quiche to rise and expand as it cooks. Top each with a sprinkle of the remaining cheese and bake in oven on middle rack until slightly firm to the touch and golden brown on top, about 25-30 minutes. Remove from oven and allow to rest for a few minutes before carefully removing to a serving plate. Garnish with a bit of fresh tomato top and a bit of diced lobster.