1. Heat the oil in a pan over medium heat and sauté the onion and garlic. Add the jalapeño peppers and cook for 5 minutes.
2. Add the tomatoes and cook over low heat for 10 minutes. Season with salt, pepper, cumin, oregano, and epazote.
3. Spread two tablespoons of masa on a corn husk, add rajas and cheese, and wrap the tamal. Repeat the process until you have no ingredients left.
4. Place the tamales in a steamer and cook over medium heat for one hour.
5. Serve the tamales with a cup of chocolate atole.