Onion and Spinach Dip

Directions

1. 1
   Heat oil in a 12-inch heavy skillet over moderately high heat until hot but not smoking, then saute onion and shallots, stirring, until lightly browned, about 2 minutes.
2. 2
   Reduce heat to moderate and continue to cook, stirring occasionally, until softened, about 8 minutes more.
3. 3
   Add spinach and cook, stirring, just until wilted, about 2 minutes.
4. 4
   Remove from heat and cool slightly.
5. 5
   Transfer spinach mixture to a bowl, then stir in cream cheese, sour cream, salt, and pepper until combined well.
6. 6
   Chill, covered, at least 1 hour.