Heat your pan to medium high, with a splash of water to your pan and add the onions, cook for 3 minutes. Add minced garlic and cook for additional 1 minute.
Add your vegetables and stir for 3 minutes. Continue to add water to ensure that your vegetables don't burn.
Add in the remaining ingredients, except the lime juice. Stir and allow to thicken. If your sauce is still thin, thicken with a slurry of 1 tbsp cornstarch and 2 tablespoons water. combine well and add to the curry and allow to thicken for a minute or two.