Preheat oven to 400 and line a large rimmed baking sheet with parchment paper.
Cut potatoes into about 1/2 inch cubes.
Cut carrots in half and then cut each half into quarters, length-wise.
Cut off white bottoms of the asparagus and cut the stalks in half.
Combine veggies in a large mixing bowl. Add pesto and mix until all veggies are evenly coated in pesto.
Spread veggies on the prepared baking sheet in one even layer. Season with a little more salt if needed and bake for 35-45 minutes (depending on the thickness of veggies and how soft you prefer your veggies.)