In a large pot over medium-high heat, add the ground beef and break it apart. Stir in remaining ingredients, plus a hefty pinch of salt and pepper, and bring to a simmer.

Cover the pot with a lid and simmer for about 30 minutes on medium-low. Serve.

Mix ingredients together in a bowl and serve.

If you want to prepare multiple servings in advance, you can shred the carrots and lettuce and slice the onion in advance and store them in the fridge in a ziploc bag or tupperware container so you just have to dice a little cucumber and tomato and add a little dressing the next time.