Eggs Baked Over Sautéed Mushrooms and Spinach

Preheat the oven to 350°. In a deep skillet, heat the olive oil. Add the leek and cook over moderate heat, stirring, until softened, 3 minutes. Stir in the butter and mushrooms. Cover and cook, stirring occasionally, until the mushrooms are softened and a lot of liquid is released, 7 minutes. Uncover and add the soy sauce and red wine and cook over moderately high heat, stirring, until the liquid is reduced to 2 tablespoons, 5 minutes. Add the spinach and stir until wilted, 2 minutes. Season with salt and pepper.

Coat four 1-cup ramekins or small gratin dishes with oil. Transfer the mushrooms and spinach to the ramekins and crack an egg on top of each. Bake for 10 to 12 minutes, until the white is barely set and the yolks are runny. Let stand for 2 minutes; serve with the toasts.