Spicy Potatoes and Kale

1 qt potatoes, cubed
1 med onion
4-5 cloves of garlic
1 bunch kale
1-2 fresh tomatoes
1 whole lemon
Olive oil
Salt, pepper, cumin, crushed red pepper
Basil (optional)

Heat olive oil in a skillet on medium heat. Add potatoes, onion, and garlic, and let cook for about 5 minutes. Add salt, pepper, cumin, and crushed red pepper to taste. Cover pan and cook for another 25-30 minutes. When the potatoes are nice and soft, add in chopped kale, tomatoes, and squeeze in half a lemon. Cook until kale is tender, then turn off heat. Add chopped basil and squeeze the other half of the lemon into the pan. Serve immediately.