Article: Ensure that you have an oven rack in the center of the oven before you turn the oven on. Leave the oven to preheat while you slice the onions. into 1⁄2 inch (1.3 cm) thick slices and lay them in a cast-iron skillet. Use a yellow onion if you'd like a sweeter flavor or slice a red onion for a sharper taste. Arrange the sliced onion in a single layer in the skillet. For a more delicate flavor, use 5 shallots instead. Peel the shallots and slice each in 1/2. Then, spread them in the skillet. Put the skillet into the preheated oven and cook the links for 20 to 30 minutes. Use tongs to carefully turn each link halfway through the cooking time. When you think they're done roasting, insert an instant-read meat thermometer into a link to see if it's reached 160 °F (71 °C). The time it takes to roast the chorizo will depend on the brand and size of the links. Begin checking them after they've cooked for 20 minutes. Turn off the oven and wear oven mitts to remove the hot skillet. Transfer the chorizo links to plates and serve them with soft cheese, crusty bread, and roasted vegetables. Put leftover links in an airtight container and refrigerate them for up to 4 days.
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Preheat the oven to 400 °F (204 °C). Cut 1 onion Roast the chorizo with onions until they reach 160 °F (71 °C). Serve the chorizo with crusty bread or roasted vegetables.