Thinly slice the chili and crush the garlic. Melt the butter in a skillet over a low/medium heat. Add the garlic and chili and sweat gently until fragrant and tender.
Whilst the chili is cooking, clean and thinly slice the mushrooms. Add the sliced mushrooms to the skillet along with the curry powder, lime juice, salt and pepper. Stir well to combine, coating the mushrooms in the seasonings. Sauté for 4-5 minutes or until the mushrooms are tender and golden.
Finely chop the cilantro. Scatter the cilantro over the cooked mushrooms and stir to combine. Serve hot.