Pumpkin chili with black beans and garbanzo beans

olive oil

onion (, chopped)

garlic cloves (, minced)

pumpkin puree (, from the can or homemade)

tomatoes (, from the can)

vegetable stock (or water)

black beans ((425 g), from the can)

garbanzo beans ((212 g), from the can)

cumin powder ((start with half the amount, and add more, to taste))

chili powder ((start with 1 tablespoon, reduce or add more, depending on your tastes and also on how spicy your chili powder is))

salt and pepper