Heat the butter and olive oil in a skillet over medium heat until melted and lightly bubbling.
Add the minced garlic and sauté for about 30 seconds until aromatic.
Add the chanterelle mushrooms in a single layer. Let them sear undisturbed for 2–3 minutes.
Stir occasionally and cook for 10–12 more minutes, allowing excess moisture to evaporate and mushrooms to brown.
Season with salt and pepper. Finish with parsley and lemon juice if desired.
Serve warm as a side, on toast, or stirred into pasta or risotto.