Preheat oven to 375°F. I sliced all the vegetables (except the hearts of palm) with a mandolin to ensure even cutting. If you don't have one just take care to slice all components the same size. The hearts of palm I hand sliced due to their soft texture, about 1/8" thick.
Add all ingredients onto a sheet pan and mix well. Make sure mixture is even spread out on the sheet pan then bake for 15 minutes, turning half way through. Enjoy!