Preheat your oven to 450°F and place a large baking tray inside to let it heat up along with the oven. This helps the vegetables get a deliciously roasted exterior.

In a large bowl, combine the frozen vegetables with olive oil, a pinch of salt, and a pinch of freshly ground black pepper. Toss everything together so the vegetables are evenly coated. I like to use extra virgin olive oil for a richer flavor.

Carefully remove the hot tray from the oven. Spread the seasoned vegetables evenly over the tray, making sure they're in a single layer and not overlapping. Roast in the oven for 15 to 30 minutes, depending on the type and size of the vegetables, until they are nicely browned and tender, turning once halfway through if desired.