Fried Eggs with Arugula and Butter-Bloomed Dukkah

The Egyptian nut, seed and spice blend known as dukkah is an excellent embellishment for simple fried eggs. We bloom it in butter before drizzling over fried eggs on a bed of baby arugula. The recipe can be doubled to make four servings; cook the eggs in two batches, but bloom the dukkah all at once after frying the second batch of eggs.