Preheat the oven to 400° F (205° C). Use the oil to grease an 9x12” or similar-sized baking dish, and add the onion, zucchini, hot sauce, and sambal oelek, tossing well. Mix all the spices in a small bowl, and sprinkle all over the zucchini mixture, and then even out the onion and zucchini in the pan. Bake for 10 to 14 minutes.
Remove the baking dish from the oven when the onions are translucent. Mix in the ginger garlic paste and tomato puree, then add in the rest of the ingredients (except garnish), and mix really well. Even it out with a spatula. Put the baking dish back in the oven to bake for 20 to 25 minutes, or until the sauce is boiling evenly and is thickening a little bit. Depending on your oven, this can take 30 minutes or so.
Remove the baking dish from the oven, garnish with cilantro and lime juice. If the curry isn’t thick to your preference, mix in a few tablespoons of non dairy yogurt or nut butter while still hot. Serve with toasted sourdough, garlic bread, naan, flatbread or rice, Or with roasted veggies.
