On a parchment lined baking sheet, toss the broccoli and garlic with the olive oil. Sprinkle with salt and pepper and spread out across the sheet for even roasting.
Roast in the preheated oven for 12 minutes.
Group all the broccoli together on the sheet and juice the lemon over the broccoli by squeezing it in your hand. Toss the broccoli to get an even coat, and serve.
Recipe by Alison's Allspice at https://www.alisonsallspice.com/garlic-lemon-roasted-broccoli/