Make-Ahead Salsa Recipe

Heat the oil in a medium saucepan over medium heat. Add the onion and cook, stirring often, until it is golden. Stir in the jalapeno and garlic and cook until the garlic is fragrant.

Stir in the diced tomatoes and crushed tomatoes, and the ground chile powder, if using.

Bring to a simmer. Reduce the heat to medium-low and simmer, stirring often, until the salsa is lightly thickened, which takes about 30 minutes.

Cool completely. Transfer the salsa to 1- or 2-cup covered containers.