Beef tomato stir-fry. (Nancy Ngo / Pioneer Press) To brown beef: Add oil to a large skillet over medium heat. Add onion slices. Saute until onion slices begin to soften, 2 to 3 minutes.

Stir in the garlic and jalapeño and cook until the garlic is fragrant, about 30 seconds. Add the tomatoes, the meat and any accumulated juices to the pan.

Stir in the garlic and jalapeño and cook until the garlic is fragrant, about 30 seconds. Add the tomatoes, the meat and any accumulated juices to the pan.