Deulkkae Mushroom Lasagna Bianca
This tomato-free lasagna gets its nutty, toasty depth from ground perilla seeds (deulkkae) stirred into the white sauce, and that flavor pairs with the earthy browned mushrooms. Button and oyster mushrooms are browned in batches so they taste roasted rather than steamed. Mozzarella binds the layers and Parmigiano browns the top, and a short rest after baking lets the slices hold their shape.