Wilt the spinach: Set a large skillet over medium heat. Add the fresh spinach to the dry pan (no oil needed; the spinach will release moisture). Cook, tossing frequently with tongs or a spatula, until the leaves are fully wilted and most of the liquid has evaporated, 3–5 minutes. If the pan looks very wet, keep cooking a minute or two longer. For thawed frozen spinach, simply add it to the pan and cook, stirring, until any remaining moisture cooks off.
Add the cream cheese: Reduce the heat to low. Scatter the cream cheese chunks over the warm spinach. Stir slowly and continuously, letting the cream cheese soften and melt into the greens. This will look a bit clumpy at first; keep stirring and pressing the cheese against the pan with your spatula until it forms a smooth, creamy coating on the spinach.
Incorporate the Parmesan: Sprinkle in the grated Parmesan and stir until it melts into the sauce, thickening it slightly. At this stage, you should have a glossy, creamy mixture that clings to the spinach rather than pooling in the pan. If it seems too thick, you can loosen it with a tablespoon or two of water, broth, or a splash of cream (if you have it on hand).
Season and finish: Taste the spinach and season with salt and freshly ground black pepper. If you enjoy the classic steakhouse profile, add a small pinch of grated nutmeg—it’s subtle but brings a warm, aromatic note that plays well with the dairy. Stir well, then cook for another 1–2 minutes over low heat so the flavors meld.
Serve: Transfer the creamy spinach to a shallow bowl or serve directly from the skillet. If you like, finish with an extra dusting of Parmesan and a few cracks of black pepper. Serve hot as a side dish or as a low-carb base for grilled or roasted proteins.
