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Instructions:
- Preheat the oven to 375°F (190°C).
- Heat the butter and olive oil in a skillet over medium heat. Add the onion and sauté until soft and translucent.
- Stir in the garlic and cook for about 30 seconds, until fragrant.
- Add the spinach and cook for 2–3 minutes, stirring, to remove any remaining moisture.
- Reduce the heat to low and add the cream cheese, stirring until fully melted and smooth.
- Mix in the heavy cream, sour cream, Parmesan cheese, salt, black pepper, nutmeg, and optional heat. Stir until creamy and well combined.
- Transfer the mixture to a baking dish and spread evenly.
- Bake uncovered for 15–20 minutes, until hot, bubbly, and lightly golden on top.
- Serve warm.
Variations
- Add finely chopped shrimp or crab for a seafood Rockefeller twist.
- Substitute Gruyère for part of the Parmesan for a nuttier flavor.
- Use fresh spinach instead of frozen, cooked down and well drained.
- Finish under the broiler for a lightly browned top.
Tips
- Drain the spinach extremely well to avoid a watery dip.
- Keep the heat low when melting dairy to maintain a smooth texture.
- Let the dip rest a few minutes after baking so it thickens slightly.
- Serve with toasted crostini, crackers, or warm garlic bread for the full steakhouse experience.