1 cup chicken broth (or vegetable broth for vegetarian version)
1/2 teaspoon kosher salt
1/4 teaspoon freshly ground black pepper
1/2 cup heavy cream
2 teaspoons fresh thyme leaves (optional)
1 teaspoon lemon zest (optional)
1 teaspoon Dijon mustard (optional)
1/4 cup grated Parmesan cheese (optional, for gratin topping)
Instructions
Trim the dark green tops and roots from the leeks, then slice lengthwise down the middle.
Rinse thoroughly under cold water, fanning the layers to remove any dirt or grit. Pat dry.
Melt butter in a large skillet over medium heat. Add minced garlic and sauté until fragrant, about 30-45 seconds.
Arrange leeks cut-side down in the skillet in a single layer. Cook undisturbed for 3-4 minutes until they begin to soften and develop golden edges.
Flip the leeks and continue cooking for another 2-3 minutes to develop more flavor.
Pour in the white wine while scraping the pan to release any browned bits. Let reduce by half, about 2-3 minutes.
Add the chicken broth, salt, pepper, and optional thyme or lemon zest. Reduce heat to medium-low, cover, and simmer until leeks are fork-tender but still hold their shape, about 15-18 minutes.
Remove lid and add the heavy cream. Simmer uncovered until the sauce thickens slightly, about 3-5 minutes.
If desired, sprinkle with Parmesan cheese and place under broiler until golden and bubbling.
Allow to rest 2-3 minutes before serving.
Notes
For a dairy-free version, substitute olive oil for butter and full-fat coconut milk for cream.
Leeks must be thoroughly cleaned as they often harbor dirt between their layers.
This dish can be made up to the braising stage a day ahead, with cream added just before serving.
Nutrition facts are estimates and may vary based on ingredients used, portion sizes, and preparation methods.