Smoky grains with eggs & harissa butter

Name: Smoky grains with eggs & harissa butter
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: African
Ingredients: 30g Lurpak Slightly Salted Butter, plus a little extra for dotting; ½ caulifl ower, in small florets (about 200g); 1 large leek, halved then thinly sliced; 100g frozen Cooks’ Ingredients Semi-Dried Tomatoes, roughly chopped; 1 tbsp zaatar; 250g pouch Waitrose & Partners Spelt, Quinoa, Red Rice and Wild Rice; 2 tsp harissa paste, to taste; 3 medium British Blacktail Free Range Eggs; Handful flat leaf parsley, roughly chopped; Full-fat Greek-style natural yogurt, to serve