1. Preheat the oven to 350°F.
2. Butter 4 individual ramekins. Reserve in the fridge.
3. Clean the endives and cut them into strips.
4. In a pan, heat the remaining butter. Add the endive strips and stir. Remove from heat and reserve.
5. In a large bowl, mix the eggs with the cream, tomatoes, cheese, and pepper. Season, add the cooked endives, and stir well.
6. Divide the mixture among the ramekins and bake for 15 to 20 minutes.
7. Remove from the oven. Decorate with black olives and serve hot.