Roasted Italian Sausage, Fennel and Red Peppers

This is wonderful. The result is the smoky roasted flavor of the broiled veg and meat coupled with the sweet, flavourful drippings that make up the intoxicating sauce. It's nice to have a bit of Commons Bread on hand to sop up the hot juices.
You can play with the ratios of vegetables. I tend to prefer less red pepper as it is a strong flavour compared to the fennel, and I love fennel so I tend to add more of that than others may like.
NOTE: The outer layer of fennel bulbs tend to be a bit tough but you don't want to discard it completely because a: it's yummy and b: it's a lot of the vegetable that is wasted. All you need to do is, with a paring knife, peel away the skin of the top layer and the flesh underneath is as sweet and lovely as the rest.

1½ lb hot or sweet Italian sausage links
1 or 2 red peppers cut into 2-inch pieces
2 med-to-small fennel bulbs, quartered and cut into 2-inch-wide pieces. See NOTE
1 large onion, quartered and cut into 2-inch pieces
¼ cup olive oil
½ tsp salt

1. Preheat the broiler.
2. Score the sausage lengthwise to split them open.
3. In a large bowl, toss together all the remaining ingredients (I do this with my hands to make sure I get everything really well covered with the salt and oil).
4. Place the sausage on a large baking sheet, cut-side down. Dump the oily vegetables on top, shifting everything around to have things on a single layer (you likely won't succeed but that's ok). It's ok if the sausage is partially exposed.
5. Broil 6-8 inches from the heat source, until the exposed parts of the sausages are browned and the vegetables begin to soften, about 10 minutes. With a spatula, flip everything over and stir, then broil until the sausage is just cooked through and the vegetables are softened, about 8 to 10 minutes more.
6. (Optional) Serve sprinkled with fennel fronds.