• Preheat the oven to 400°F and line a sheet pan with parchment paper. 

Prepare the Cauliflower:

• Remove the green leaves from the underside of the cauliflower and trim the stem flat.
• Rinse the cauliflower under cold running water, then dry with paper towels.
• Place the cauliflower stem side down on the cutting board and carefully cut 2 sides off so they are flat.
• Cut the cauliflower in half, then cut each half in half again for a total of 4 thick cauliflower slices
• Place the cauliflower steaks/slices on the sheet pan.
• In a small dish combine the softened butter and the grated/crushed garlic together, blending well. 
• Spread a tablespoon of the garlic butter on both sides of each steak/slice. Sprinkle with salt and pepper.
  

Roast the Cauliflower Steaks:

• Transfer the sheet pan to the oven and roast the cauliflower steaks for 10 minutes, turn the steaks with a spatula and continue to roast for another 15 minutes or until tender when pierced at the stem with a skewer.  
• Serve each cauliflower steak with a tablespoon or more of chimichurri sauce.