Grilled Cauliflower Steaks

Bahan-bahan (4 porsi)

• 2 large heads cauliflower
• 2 tablespoons extra-virgin olive oil
• 2 lemons (zested and juiced)
• 2 cloves garlic (finely minced)
• 1 teaspoon honey (use agave to make vegan)
• 2 teaspoons kosher salt (divided)
• 1/4 teaspoon red pepper flakes
• 1/4 cup chopped fresh parsley
• 1/4 cup chopped toasted walnuts
• Lemon wedges (for serving)