In a medium bowl, mix the tomatoes with the salt and sugar. Let sit for 30 minutes.
Transfer the tomatoes to a salad spinner and spin to remove any excess moisture.
Pour the tomatoes back into the bowl and toss with the 3 tablespoons of olive oil, the red wine vinegar, and another pinch of salt.
Preheat the oven to 450°F. Line a large baking sheet with parchment paper or a silicone baking mat.
Slice the baguette diagonally. Lay the bread slices on the prepared baking sheet. Brush both sides with the remaining olive oil and sprinkle with salt.
Bake for 3–4 minutes per side, until golden and crisp. Remove from the oven and let cool for 10 minutes before topping.
Top the toasts with burrata (or ricotta), spoon the tomato mixture over the top, and finish with fresh basil. Enjoy!