1: Preheat your oven to 400°F (200°C).
2: Bake the Idaho potatoes for about 45 minutes or until tender.
3: Let potatoes cool slightly, then slice them in half and scoop out some of the insides.
4: In a mixing bowl, combine the potato insides, heavy cream, cheddar cheese, mozzarella, sour cream, and stir until well blended.
5: Cook the flank steak and slice it into small pieces.
6: Fill the potato skins with the shrimp and steak mixture.
7: Top with diced tomatoes, jalapenos, and additional cheese if desired.
8: Bake for another 10-15 minutes until the tops are golden and cheese is melted.
9: Serve hot and enjoy!