Spinach Gratin is a wonderful creamy, and cheesy, side dish that looks and tastes fancy, but is easy to make and can be prepped ahead! Filled with robust gruyere cheese, my favorite @ChallengeButter, and a pinch of nutmeg, this recipe for spinach casserole takes this classic steakhouse side dish to the next level! #ChallengeButterpartner #challengebutter
404