Mustard Roasted Potatoes

Notes:  This recipe was inspired by Ina Garten.

Ingredients:
2.5 pounds of red or yukon gold potatoes
2 yellow onions
3 tablespoons olive oil
2 tablespoons whole grain mustard
Kosher salt, to taste
Ground Pepper, to taste
Parsley, to garnish

Instructions:

1. Cut the potatoes into quarters and distribute them evenly on a sheet pan.  Do not crowd them so that they roast instead of steam.
2. Peel and slice the onions in half moons about 1/4 inch thick.
3. Toss the onions into the potatoes.
4. Sprinkle the olive oil and mustard on the potato-onion mixture.
5. Toss the potato-onion mixture with clean hands until all the potatoes are coated.
6. Sprinkle with salt and pepper.
7. Bake in a 350 degree oven for 50 - 60 minutes.
8. Toss the potatoes every so often to ensure even browning.
9. Plate the potatoes and garnish with chopped parsley.