Preheat oven to 400 degrees.
Coat cut up sweet potatoes with olive oil and sprinkle with salt and pepper.
Place on a cookie sheet covered with parchment paper.
Roast in oven for 40 minutes or until tender and soft. Turn after 20 minutes.
Cook bacon until crisp and crumble.
Cook onions in leftover bacon grease until caramelized, soft, brown and sweet. About 10-15 minutes.
Put maple syrup into a pan with the thyme and bring to a boil.
Boil until syrup is reduced by half.
Place roasted sweet potatoets, bacon and onions into a bowl and cover with syrup mixture.
Stir to coat.