01 - Set the oven temperature to 400°F (200°C).
02 - Place the cherry tomatoes in a large baking dish. Add minced garlic and drizzle with 2 tablespoons of olive oil. Season with salt, pepper, and dried oregano, then toss to combine evenly.
03 - Create a space in the center of the baking dish and place the block of feta cheese there. Drizzle the remaining 1 tablespoon of olive oil over the feta.
04 - Sprinkle crushed red pepper flakes over the feta if using.
05 - Bake for 30 to 35 minutes until the tomatoes have burst and the feta is soft and lightly golden.
06 - Meanwhile, cook the pasta in a pot of salted boiling water according to package directions until al dente. Reserve 1/2 cup of cooking water, then drain.
07 - Remove the baking dish from the oven. Use a fork to mash the feta and roasted tomatoes together until creamy and well combined.
08 - Add the drained pasta and fresh basil leaves to the baking dish. Toss everything together, adding reserved pasta water a little at a time to achieve a silky sauce consistency.
09 - Taste and adjust seasoning with salt and pepper if necessary. Serve immediately garnished with additional basil leaves.