Place the cherry tomatoes in an even layer at the bottom of your slow cooker.
Set the feta cheese and cream cheese blocks on top of the tomatoes.
Drizzle the olive oil evenly over the top.
Sprinkle the garlic, salt, pepper, oregano, thyme, and red pepper flakes over everything.
Cover your slow cooker with the lid and cook on HIGH for 4 hours or LOW for 6 hours.
About 15 minutes before the slow cooker is finished, cook your rotini pasta according to the package directions. Drain completely.
Once the slow cooker timer goes off, remove the lid and stir the feta-tomato mixture until combined into a smooth sauce.
Add the drained pasta to the slow cooker and mix until fully coated in the creamy sauce.
Top with shredded parmesan cheese and fresh chopped basil before serving.