Heat oven (or toaster/convection oven) to 425°F.

Slice artichokes in half, place on a parchment-lined baking sheet.

Whisk garlic and olive oil or ghee together. Drizzle over the artichokes. Arrange lemons around the pan.

Roast for 12-18 minutes (or for 8-10 minutes in convection oven), or until artichokes turn tender. Sprinkle with parmesan, salt and pepper before serving.