Carefully cut the spaghetti squash in half lengthwise and scoop out the seeds.
Place the squash halves cut-side up on a baking sheet and drizzle with olive oil. Season with salt, pepper, and a sprinkle of oregano.
Place the block of feta cheese in the center of the baking sheet. Surround it with the halved cherry tomatoes and minced garlic. Drizzle everything with a little more olive oil and sprinkle the red pepper flakes over the top if using.
Bake in the preheated oven for about 30-35 minutes, until the squash is tender and the feta cheese is soft and starting to brown slightly.
Once done, remove the baking sheet from the oven. With a fork, scrape the insides of the spaghetti squash to create strands.
Mix the roasted tomatoes, garlic, and crumbled feta together with the squash strands until well combined.
Notes
Serve in the squash shells for a beautiful presentation.