Spiced coconut eggs

Name: Spiced coconut eggs
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Cuisine: Asian, Indian
Ingredients: 100g unsalted butter; 2 onions, thinly sliced; 3 teaspoons good-quality mild curry powder; 6-8 fresh curry leaves; 200ml hollandaise sauce; 200ml coconut cream; 200ml thick cream; 100ml vegetable stock; 2 tablespoons lemon juice; 8 hard-boiled eggs, peeled; 4 spring onions, sliced on the diagonal; Toasted shaved coconut and paprika, to garnish; Steamed basmati rice and pappadams, to serve