Prep vegetable ingredients. Potatoes and carrots will take the longest to cook dice them into smaller bite sized pieces for a faster cooking time.
Preheat your pot to medium heat. Coat with a little bit of oil. Sauté onions and season it with a little bit of salt until it is caramelized or golden brown. Add the minced garlic and stir. Give it another minute or two and let it sit. Bloom the tomato paste and toss along with the onions and garlic.
Add the potatoes and carrots. Stir thoroughly. Then pour the vegetable broth. Allow the potatoes and carrots to simmer for 5-7 minutes.
Drop in the curry roux and let it dissolve into the broth and add a splash of tamari. Lower down the heat and allow it to simmer for another 5-7 minutes, stirring it every minute or so.
Add the bell peppers into the curry and mix. Let it simmer for 3-4 minutes before turning off the heat. You will know your curry is done when the broth has slightly thickened and potatoes are tender.