Ingredients
3
pounds adult spinach (from five 10-ounce bags), tough stems removed
3
tablespoons unsalted butter
¼
cup finely chopped shallot
3
garlic cloves, minced
2
tablespoons all-purpose flour
1
cup whole milk
1
cup heavy cream
Salt and black pepper
¼
cup sour cream
Preparation
- In a large pot, bring ½ inch of water to a boil over high. Add spinach in 3 batches, stirring until each batch is wilted before adding another, until all of the spinach is wilted, about 3 minutes. Drain in a colander and run under cold water until cool. Drain again, pressing out excess water, then coarsely chop for a total of 4 packed cups.
- In the same pot, melt 2 tablespoons of the butter over medium-low. Add shallot and cook, stirring, until softened with no color, about 2 minutes. Stir in garlic until fragrant, 30 seconds. Add the remaining 1 tablespoon butter and stir until melted, then add flour and cook, stirring constantly, until flour is light golden but the shallots still have no color, about 3 minutes. While whisking constantly, drizzle in milk and cream until smooth, and season with salt and pepper. Bring to a simmer, then add chopped spinach and season with salt and pepper. Cook, stirring, until the spinach is totally incorporated and the sauce is thickened, 2 to 3 minutes. Stir in sour cream until combined. Transfer to a bowl and serve warm.