Roasted Potatoes with sage

1 pound potatoes fingerling or red new potatoes, washed 1 tablespoon olive oil 1 each yellow onion halved and thinly sliced 2 cloves garlic or to taste,[...]

add to shopping list 1 pound thick-cut bacon slices, cut crosswise into 1/4-inch-thick strips 5 pounds assorted baby potatoes (such as red-skinned,[...]