preheat oven to 425

slice broccoli lengthwise into 4 evenly size pieces

brush broccoli with olive oil and garlic

sprinkle on Parmigiano-Reggiano

roast for about 25 minutes (you want the broccoli to carmelize)...

sprinkle with lime juice right before serving

WICKED good

The broccoli keeps quite well (I tend to make up big batches and eat them over the next 2-3 days).

I'd add the lime (or lemon) juice at the last minute though....