asparagus and/or spring onions, ends trimmed
good bread, cut into thick slices
bechamel sauce (recipe below)
grated gruyère, Comté or Swiss cheese
1. Preheat the oven to 400ºF. Toss the asparagus and spring onions with olive oil and kosher salt on a rimmed baking sheet. Roast the vegetables until tender, about 10 to 15 minutes. Test with a knife for doneness.
2. Preheat the broiler. Place the slices of bread on a sheet pan and broil them about a minute on each side. Remove pan from the oven. Spread about a tablespoon of bechamel over each slice of bread. Top with the roasted vegetables. Top with grated cheese to taste.
3. Broil until the cheese is bubbling and starting to brown. Sprinkle with the fresh thyme and serve immediately.
Note: This recipe is adapted from Silverton’s recipe for Mornay sauce in her croque monsieur recipe in her Sandwich Book. To make it a Mornay sauce, as far as I can tell, stir in 1/2 cup finely grated Gruyère and 1/4 cup finely grated Parmigiano Reggiano at the very end.
Also Note: This makes enough bechamel for about 30 croque monsieurs. I haven’t tried having the recipe, but it likely would work just fine. I don’t use bechamel that often, so I’m short on ideas for using up the remaining bechamel. Thoughts? I just plan on eating croque monsieur every day until I’m out of bechamel.
2 tablespoons butter
1/2 medium white or yellow onion (about 4 tablespoons finely chopped)
4 black peppercorns, crushed (I didn’t do this)
2 tablespoons flour
2 cups whole milk
1. In a medium saucepan over medium heat, melt the butter. Add the onion, salt, and cracked peppercorns (if using), and cook about 10 minutes, until the onion is soft but has not begun to color. Remove from the heat and add the flour in two batches, whisking to combine it with the onion and butter. Return the pan to the stove and over low heat, cook a few minutes, until the flour is absorbed, stirring constantly so that it doesn’t brown. Remove from the heat and slowly whisk in the milk. Drop in the bay leaf.
2. Return the pan to the stove, and bring the mixture to a boil. Reduce the heat to low and simmer, stirring occasionally to prevent the sauce from burning on the bottom of the pan. Cook for 20 to 30 minutes, until the taste of raw flour is gone and the mixture is thick, smooth and silky. If it’s too thick and becoming difficult to stir, you’ll need to whisk in a little more milk.
3. Using a fine mesh sieve, strain the sauce. (I didn’t strain the sauce — I don’t mind those onion bits, and the bay leaf was easy enough to pull out. Now, if you did the peppercorn thing, you probably want to strain the sauce.)