Method
- Start by prepping your brioche buns, cheddar, mayonnaise so the cooking goes quickly.
- Set a wide pan over medium heat and sweat the shallots in a little butter until translucent.
- Add the mushroom melt and let it sheet-pan, undisturbed, so it takes on real color before you stir.
- Stir in the brioche buns along with a good pinch of salt, scraping up anything stuck to the bottom of the pan.
- Taste and adjust, then finish with flaky sea salt right before serving.
- Serve warm, ideally with something to soak up the sauce.
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4.0 from 883 cooks.