Tofu tikka masala

There is a place near me that makes this incredible paneer tikka masala and I've been hoping to try to recreate it at home. This actually a pretty close version using tofu instead of paneer. You could easily use paneer if you wanted and the process wouldn't change. Serve this with rice and naan.

Ingredients:

1/2 block tofu, drained and pressed and cut in cubes
1 tablespoon oil
1/4 green pepper, sliced
1/4 red pepper, sliced
1/2 an onion, sliced
1 clove garlic, made into a paste
1/2 tablespoon fresh ginger, grated
3/4 cup crushed tomato
1/2 cup water
1/2 teaspoon cumin
1/2 teaspoon garam masala
1 cardamom pod, cracked open and seeds crushed
1/4 teaspoon coriander seeds, crushed
1/8 teaspoon cayenne pepper
1/4 teaspoon paprika
1/4 teaspoon salt
1 tablespoon butter
1/4 cup plain yogurt

Directions:

In a saute pan, heat oil over medium heat and cook tofu for 3-5 minutes, or until lightly browned on the sides. Remove from pan. Add the bell pepper strips and onion to the pan, adding more oil if necessary and saute for 3-5 minutes or until soft. Remove from heat. In a medium sauce pot, combine garlic, ginger, tomato, water, cumin, garam masala, cardamom, cumin, coriander, cayenne, paprika, salt, and butter. Bring to a gentle simmer and cook for about 10 minutes or until it has thickened up a bit. Add tofu and sauteed veggies and cook about 2-4 minutes more, or until the veggies are very soft and the tofu is evenly coated. Turn off heat and stir in yogurt. Serve with rice and naan.