In a large baking dish, combine the halved cherry tomatoes, minced garlic, red pepper flakes, and olive oil. Season with salt and pepper, then mix well.
Create a space in the center of the tomatoes and place the block of feta cheese there. Drizzle a little olive oil over the feta, and season it with a pinch of salt and pepper.
Bake the dish in the preheated oven for 25-30 minutes, or until the tomatoes are blistered and the feta is golden and slightly softened.
While the tomato and feta mixture is baking, cook the penne pasta according to package instructions until al dente. Reserve 1/2 cup of the pasta water, then drain the pasta.
Once the feta and tomatoes are done, remove the dish from the oven and use a fork to mash the feta and tomatoes together until creamy and well mixed.
Add the drained pasta to the baking dish and toss everything together. Pour in the reserved pasta water a little at a time until you reach your desired sauce consistency.
Finish with a squeeze of lemon juice and the lemon zest, and toss in the torn basil leaves before serving.
Notes
Serve the pasta in bowls, garnishing each with a few additional basil leaves and a sprinkle of fresh cracked pepper. A drizzle of good-quality olive oil on top adds an extra layer of flavor!