In a bowl, combine the cherry tomatoes, olive oil, grated garlic, champagne vinegar, kosher salt, and several cracks of black pepper. Toss to coat and let marinate for 10-15 minutes while you prep the whipped Boursin.
Add the Boursin, cream cheese, heavy cream, lemon zest, and a few cracks of black pepper to a food processor. Blend until smooth and fluffy.
Spread the whipped Boursin onto a serving platter or shallow bowl, creating swoops with the back of a spoon. Spoon the marinated tomatoes and all of their juices + olive oil over the top. Finish with torn basil, a generous drizzle of balsamic glaze, flaky salt, and a few more cracks of black pepper.
Serve with toasted baguette slices, crostini, or your favorite crackers!!