Sarah s Spinach Side Dish

1 tablespoon whipped butter

1 tablespoon all-purpose flour

1 pinch garlic salt

1 pinch kosher salt

¼ cup low-fat milk

1 (10 ounce) package frozen chopped spinach, thawed and squeezed dry

Melt whipped butter in a small saucepan over medium heat; stir flour, garlic salt, and kosher salt into the melted butter until smooth.

Whisk in low-fat milk, bring to a simmer, and reduce heat to low. Simmer sauce until thickened, whisking constantly, about 1 minute.

Stir spinach into the sauce and heat until warmed through, 1 to 2 more minutes.