Set your oven to 350°F and let it fully heat before you put anything inside. A properly preheated oven ensures the brie melts evenly instead of cooking unevenly on one side. I usually use this waiting time to prep my tomatoes and trim the cheese.
Using a sharp knife, carefully slice off the top rind of the brie wheel, leaving the sides and bottom intact. This step lets the heat reach the center of the cheese so it melts into a smooth, saucy texture instead of staying firm in the middle.
In your baking dish, combine the cherry tomatoes, olive oil, minced garlic (if using), and fresh thyme. Give everything a good toss so the tomatoes are evenly coated. Push them toward the edges of the dish to make space for the cheese in the center.
Place the trimmed brie wheel in the middle of the baking dish, nestled among the tomatoes. Slide the dish into the oven and bake for about 35 minutes, or until the rind has softened completely and the center is fully melted and gooey.
While the cheese bakes, bring a large pot of salted water to a boil and cook your pasta until al dente. I always save a splash of the starchy pasta water before draining, since it helps loosen the sauce later if needed.
Once the brie and tomatoes come out of the oven, immediately stir them together right in the baking dish until they form a creamy, cohesive sauce. Add the drained pasta and toss until every piece is coated in that melty, tomato-flecked sauce.
Season with salt and pepper to taste, top with fresh basil, and serve immediately while the sauce is still warm and silky. This dish is best enjoyed fresh, right out of the dish.