Not really spicy (though I always add a little sriracha), but super good and uses really simple ingredients.
Ingredients:

500 g meat, whatever you like. I usually go with boneless chicken thigh cut to bite-sized pieces

50g butter
1/4 cup flour
2 tbsp curry powder
2 tsp garam masala, though I never freaking have any, so I skip this, it's cool

2 tbsp vegetable oil
2 cloves of garlic, either chopped small or through a garlic press
half of an onion, chopped
1/4 cup dark soy sauce
1 tbsp honey
1 tsp grated ginger (powdered is fine too)
2 tbsp apple cider vinegar
3/4 cup of grated apples (according to the original, it works with pears too, but I have never tried, this is perfect to use some of those overripe apples) + 1/4 cup water
2 cups of chicken stock
2 peeled and cubed potatoes
2 peeled and cubed carrots
salt
Pepper

OPTIONAL:
a handful of chopped mushrooms
broccoli pieces
chili/a bit of hot sauce if you like, I usually do a little sriracha

In a small saucepan heat the butter, add the flour, stir and cook for about 2 minutes on medium, then add the curry and garam masala. Set aside.

In a pot, heat the oil, add the onion, garlic and a pinch of salt, cook until transparent. Add the chicken, then the curry mixture and a a splash of water, mix until the meat is coated in the spicy stuff. Add the stock, vinegar, soy sauce honey, apple and ginger.
Add the carrots, potatoes and bring it to a simmer. Add the mushrooms. Turn the heat low and simmer gently, stirring occasionally for about 45-ish minutes. If it gets too thick, you can add a little water back in. The broccoli can go in a couple minutes before its done.
Cook some rice for the side.

If you wanna be extra, make a 6 minute egg. It really adds a lot, so I recommend it.