Make-Ahead Salsa

Directions

1. 1
   Heat the oil in a medium saucepan over medium heat.
2. 2
   Add the onion and cook, stirring often, until it is golden, about 5 minutes.
3. 3
   Stir in the jalapeno and garlic and cook until the garlic is fragrant, about 1 minute.
4. 4
   Stir in the diced tomatoes and crushed tomatoes, and the ground chile powder, if using.
5. 5
   Bring to a simmer.
6. 6
   Reduce the heat to medium-low and simmer, stirring often, until the salsa is lightly thickened, about 30 minutes.
7. 7
   Cool completely.
8. 8
   Transfer the salsa to 1- or 2-cup covered containers.
9. 9
   (The salsa can be refrigerated for up to 3 days, or frozen for up to 3 months.
10. 10
    Defrost the frozen salsa before using.)