Heat a large frying pan over a medium heat, then add the olive oil and gently cook the garlic for a minute. Add the courgettes and fry until golden brown.
While the courgettes are browning, cook the tortelloni according to the instructions on the pack and drain, keeping back a large ladleful of the pasta cooking water.
Add the tortelloni to the frying pan and toss it all together for a minute over a high heat, adding the pasta water a little at a time to loosen.
Serve with a sprinkling of fresh parsley.