Wash and rinse all vegetables

Slice zucchini, yellow square, and carrots into 1 inch pieces

Slice sweet potatoes into 1 inch cubes

Slice onions into quarters, then separate each quarter in half

Add all vegetables into a large pot or bowl for mixing

Add olive oil, balsamic vinegar, thyme and rosemary to a small bowl

Press or dice the garlic and add to the small bowl with the rest of the oil and spices and mix

Pour the oil and spice mixture over the bowl full of sliced vegetables

Mix the vegetables with a large wooden spoon until evenly coated

Preheat the oven to 450

Cover two baking pans with aluminum foil (to make clean up easier)

Spread vegetables evenly on the baking pans

Cook vegetables for a total of 40 minutes, turning them once after 20 minutes