Roasted Vegetable Mash

2 medium / small carrots
3 large red potatoes
1 1/2 medium sweet potatoes
1/2 an onion
1/4 cup butter
1/4 cup cream or half and half {more or less, judge the thickness}
A bit of garlic

*I intentionally left the skins on the red potatoes and carrots. It didn't turn out smooth as a result, so peel yours if you like. I always leave the skins on, so I wasn't bothered, and when mashing I left it with tiny chunks rather than pureeing to babyfood stage.

Peel the sweet potatoes and cut into large chunks. Cut the potatoes into Quarters and the carrots in thirds. Quarter the onion half. Place into a roasting pan or dish, and drizzle with just a hint of olive oil. Sprinkle with a dash of salt and cover with foil or lid. Roast in a 375 degree oven for an hour-ish, until vegetables are tender. Place into kitchen aid or mixing bowl. Add butter and cream, and salt if needed and mix on high until blended.