To use little time, auto cook the potatoes and sweet potatoes and the squash I steamed mine in a microwave for 4-5 minutes each. In a sauce pan already set on fire, add cooking oil and let it heat for a minute, add onions and let it cook for 3-4 minutes. Add capsicum and zucchini and cover to simmer for about 5 minutes don't let it overcook we need them crunchy.