If you've never had stuffed tomatoes, you're in for a treat! My keto stuffed tomatoes recipe is filled with spinach and cheese, but there are so many variations below too.
Cut the tops off of the tomatoes. Using a small spoon, carefully remove and discard pulp. I like to mix it back in and use it because it's delicious, but if you don't like tomato innards you can toss them.
Season the insides of the tomatoes with ½ teaspoon of black pepper and ¼ teaspoon of salt. Invert the tomatoes onto paper towels and allow the tomatoes to drain while you make the filling.
In a medium bowl, combine the spinach, Boursin cheese, sour cream, salt and pepper, and ¼ cup of the shredded parmesan. Stir until ingredients are well combined. Divide the mixture between the tomatoes.