Boil a large pot of salted water, add tortelloni + cook 4-6 min until al dente, then drain

Meanwhile, wipe mushrooms clean + thinly slice; heat 1 tbsp oil in skillet over high, add mushrooms + cook undisturbed 3 min; sauté 3-4 min until browned + tender, season with salt/pep + set aside

Remove skin from 2 cloves of garlic, finely chop + discard root ends

Heat skillet over medium + add butter; cook while stirring until browned, 2-3 min; add garlic + cook 1 min until fragrant; toss pasta with brown butter sauce, chopped parsley + mushrooms; divide to plates