Preheat oven to 375°F and prepare a baking sheet with parchment paper.
In a bowl, mix together yogurt and remaining ingredients and rub all over outside of cauliflower. Pop on baking sheet and bake for 40-50 minutes until golden and crispy. Cool slightly while preparing drizzle.
In a mortar and pestle, smash garlic, half the pine nuts and tomatoes until chunky. Add in remaining ingredients, stir to combine. Drizzle over cauliflower. Serve warm or at room temperature.