Try this homemade Eric Kayser'S Croque-Monsieur With Mornay Sauce recipe the whole family will love. Made with Mie, ham, gruyere cheese and butter. Easy…
This Eric Kayser'S Croque-Monsieur With Mornay Sauce relies on simple, everyday ingredients such as of pain de mie, of smoked ham, of gruyere cheese and butter at room temperature. It comes together quickly and makes 4 servings, at about 754 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.
Updated Jun 30, 2026