Can I make these stuffed tomatoes ahead of time?

You can assemble them a few hours before baking and keep them covered in the fridge. Add the topping right before baking to keep it crisp.

Is mascarpone cheese necessary or can I use cream cheese?

Cream cheese works as a substitute, but the texture will be slightly firmer and tangier. Let it soften fully for easy mixing.

Are these tomatoes filling enough for a main course?

Absolutely. Serve two per person alongside a green salad for a satisfying keto meal.

Keto Tuna and Goat Cheese Stuffed Tomatoes

Name: Tuna and Goat Cheese Stuffed Tomatoes
Prep time: 20 min
Cook time: 27 min
Total time: 47 min
Yield: 6
Cuisine: Keto
Ingredients: large tomatoes; salt to taste; black pepper to taste; ounces crumbled goat cheese; ounces mascarpone cheese, room temperature; (12 ounce) can albacore tuna in water, drained and flaked; /2 cup finely chopped red onion; /2 cup finely chopped cucumber; /2 cup finely chopped mushrooms; /2 cup finely chopped red bell pepper; /2 cup finely chopped celery; teaspoon minced garlic; tablespoon toasted sesame seeds; teaspoons sunflower seeds; tablespoons shredded Parmesan cheese; teaspoon garlic salt; teaspoon onion powder; tablespoon dried parsley flakes for garnish (optional); teaspoon Worcestershire sauce (optional)

Ingredients

large tomatoes
salt to taste
black pepper to taste
ounces crumbled goat cheese
ounces mascarpone cheese, room temperature
(12 ounce) can albacore tuna in water, drained and flaked
/2 cup finely chopped red onion
/2 cup finely chopped cucumber
/2 cup finely chopped mushrooms
/2 cup finely chopped red bell pepper
/2 cup finely chopped celery
teaspoon minced garlic
tablespoon toasted sesame seeds
teaspoons sunflower seeds
tablespoons shredded Parmesan cheese
teaspoon garlic salt
teaspoon onion powder
tablespoon dried parsley flakes for garnish (optional)
teaspoon Worcestershire sauce (optional)

Instructions

Step 1

First, preheat your oven to 350°F. Line a baking sheet with foil for easy cleanup. Cut a thin slice off the top of each tomato and carefully scoop out the insides, leaving a sturdy shell about half an inch thick. Save about half a cup of the pulp, chop it finely, and set it aside. Lightly season the inside of each hollowed tomato with salt and pepper. In a large bowl, combine the reserved tomato pulp, crumbled goat cheese, room-temperature mascarpone, flaked tuna, red onion, cucumber, mushrooms, bell pepper, celery, minced garlic, and toasted sesame seeds. Letting the cheeses soften beforehand makes mixing effortless. Spoon the filling generously into each tomato shell, mounding it slightly. Arrange them on the prepared baking sheet. For a crispy topping, sprinkle sunflower seeds, shredded Parmesan, garlic salt, onion powder, and extra pepper over each. If you like, add a pinch of dried parsley and a drop of Worcestershire sauce for depth. Bake for 25 minutes until heated through, then switch to broil for a minute or two to lightly brown the tops. Serve warm.

Chef's Tip

I always pat the tuna dry after draining to prevent a watery filling. For the richest taste, use oil-packed tuna instead, but drain it well to keep carbs low.

Storage Tips

Store leftovers in an airtight container in the fridge for up to 3 days. Reheat gently in the oven at 325°F to maintain texture, or enjoy cold straight from the fridge.

Variation Tips

Swap tuna for canned salmon or cooked shrimp for a seafood twist. For extra crunch, mix in chopped walnuts or use different herbs like dill. These pair nicely with a crisp arugula salad or a side of roasted asparagus.

Tuna and Goat Cheese Stuffed Tomatoes