Grab a rimmed aluminum sheet pan and add the quartered red-skins and sliced onions.
Drizzle with 3-1/2 tablespoons garlic olive oil and 2-1/2 tablespoons of the grainy Dijon mustard.
Toss with you impeccably clean hands and spread them out evenly before popping them into the oven to roast for 45-60 minutes. Stir them once halfway through.
Once crispy and golden, season with kosher salt, black pepper and the chopped fresh parsley. Enjoy!
Recipe Notes
Adapted from Simply Scratch (www.simplyscratch.com)