Baked Mushrooms

Large field mushrooms are made for stuffing. The wide, flat caps hold a generous filling without fussing, and they release just enough of their own liquid during baking to keep everything moist.

The filling here is a mix of fried onion, sausage meat, whole wheat breadcrumbs, and fresh sage. The onions get cooked in butter until tender first, then combined with the rest of the ingredients. That step matters: raw onion in a stuffing that bakes for only 20 minutes will still taste raw. Softening them in butter beforehand gives you a smooth, cohesive filling.

Four tablespoons of water go into the bottom of the dish before baking. It creates just enough steam to help the mushrooms soften evenly from the bottom without drying out on the edges.

Fresh sage is the flavoring that ties this together. Dried sage works in a pinch, but use half the amount since dried herbs concentrate as they lose moisture.

Pro Tips

• Use large field mushrooms: The cap needs to be wide enough to hold the filling. Button mushrooms are too small.
• Discard the stalks: The recipe calls for removing and discarding them. They release too much liquid and make the filling soggy if left in.
• Pre-cook onions properly: They should be fully softened before mixing into the stuffing. Pale and translucent, not browned.
• Don’t skip the water in the dish: It prevents the mushroom edges from drying and curling up during baking.

Variations

• Vegetarian version: Replace sausage meat with finely chopped walnuts or cooked lentils for a meatless stuffing with similar texture.
• Add cheese: A sprinkle of grated Parmesan or gruyere over the top before baking adds a golden crust.