Step 1: Preheat your oven to 400°F (200°C).
Step 2: In a large oven-safe baking dish (around 9x13 inches), combine the halved cherry tomatoes, sliced garlic, olive oil, salt, and black pepper. Toss gently to coat all the tomatoes.
Step 3: Place the block of Boursin cheese directly in the center of the tomato mixture in the baking dish.
Step 4: Bake for 25-30 minutes, or until the tomatoes have burst and softened, and the Boursin cheese is melted and bubbly. The tomatoes should look slightly caramelized.
Step 5: While the cheese and tomatoes are baking, cook the pasta according to package directions in a large pot of salted boiling water until al dente. Before draining, reserve about 1 cup of the starchy pasta water. Drain the remaining pasta.
Step 6: Carefully remove the baking dish from the oven. Using a fork or a potato masher, gently mash the roasted tomatoes and Boursin cheese together, stirring vigorously to combine them into a creamy sauce. If the sauce seems too thick, add a splash or two of the reserved pasta water until it reaches your desired consistency.
Step 7: Add the drained, cooked pasta to the baking dish with the sauce. Toss everything together until the pasta is evenly coated.
Step 8: Garnish with fresh chopped basil and serve immediately. Enjoy your easy and delicious boursin pasta recipe!