When prepping your vegetables, ensure the potato halves and onion wedges are roughly the same size. Pro Tip: This allows them to finish cooking at exactly the same time, preventing burnt onions or raw potatoes.
Instead of seasoning directly on the pan, add the meat, potatoes, and onions to a large mixing bowl. Pour the oil and spices over them and toss until every surface is glossy and red from the paprika. This ensures a consistent "kick" in every bite.
Line a large baking sheet with parchment paper. This prevents the sugars in the onion from sticking to the pan, making cleanup a breeze.
Spread the mixture onto the pan in a single layer. Crucial: If you crowd the pan, the vegetables will steam rather than "fry." Use two pans if necessary to ensure airflow around each piece.
Bake at 400°F (increasing the temperature slightly from the original) for 45 minutes. The higher heat helps the sausage edges "frizzle" and turn crisp.
About 20 minutes in, use a spatula to flip and rotate the ingredients. This ensures the potatoes get golden brown on all sides.
To check for doneness, pierce a larger potato with a fork. If it slides in with zero resistance, the dish is ready.