Preheat the oven to 400F and line a large sheet pan with parchment paper (or two smaller sheet pans). The food needs enough room for roasting without steaming, so make sure there's plenty of room for the veggies and sausage to spread out (no packed layers).
If the fingerling potatoes are small, use them as-is. If larger, halve the potatoes into 1" pieces. If you're using yellow baking potatoes, halve and then cut into smaller pieces. The goal is for all the veggies to be relatively uniform in size so everything cooks evenly.
1 1/2 pounds fingerling potatoes
Cut the ends off the peppers and pull out any seeds and membranes. Halve the peppers.
Add the oil, garlic cloves, and all seasonings to the vegetables. Mix well with your hands. (If you don't have the individual spices on hand, alternatively, use 2 teaspoons Italian Seasoning.)
6 garlic cloves, 1 1/2 teaspoons salt , 1/2 teaspoon black pepper, 1/2 teaspoon dried rosemary, 1/2 teaspoon dried thyme, 1/2 teaspoon dried basil, 2 tablespoons extra virgin olive oil
Arrange the vegetables on the prepared sheet pan.
Roll the raw sausages in the remaining oil in the bowl, then place among the vegetables, nestled into "pockets" within the veggies.
4-6 links Italian or Andeloui Sausage
Roast for 30-40 minutes, until vegetables are fork-tender and sausage has reached an internal temperature of 160F. See post above for serving ideas.