Place the potatoes and carrots in a pot with enough water to cover them. Bring to boil just until they start to soften.
Meanwhile, place large skillet over medium heat and add some oil. Once hot, add onion and ground beef. Break apart ground beef, season with s&p and cumin, and cook for 5 minutes.
Add garlic, tomatoes, and jalapenos to beef mixture and cook for 5 minutes. Add carrots, potatoes, juice of both limes, and cilantro. Allow to simmer for additional 10 minutes.