Wash and cut all the vegetables on the desired length and shape. I sliced potatoes, bell peppers and purple onion lengthwise, the rest of the vegetables (zucchinis, eggplants) slice as rounds.
Preheat oven to 350 F/ 177 C and place parchment paper on the bottom of baking sheet.Place the vegetables on the baking sheet by layers and season and spray with olive oil each layer.
Start with potatoes, season generously with salt & pepper, add carvi seeds (or your favorite seasoning) and spray with olive oil.Next layer is zucchini and eggplants. Repeat the same seasoning and spray with olive oil. T
he following layers do not require more seasoning, thus light spray of olive oil would add more moisture. Add layer of bell peppers, purple onion and sausages cut in smaller 2" size pieces.
Place the whole sheet pan in the oven and bake on 350 F/ 177 C for about 35 - 45 minutes. Test the potatoes first, these would cook the longest. If potatoes are cooked, all the rest of the vegetables and sausages are cooked.
Remove the sheet pan from the oven and let it stand for 5-10 minutes to cool down a bit. Now you can serve this one pan veggie and sausages for the dinner.
You can accompany this dish with hummus sauce or any other dipping sauce, such as ketchup and mayo mix is very popular in my house.