Ingredients
Metric and US measurements are approximate conversions; ingredient densities vary. Double-check temperatures and cooking times when changing portions.
Method
Cook mushrooms in 1 tbsp olive oil until golden, then remove from the pan.
Soften onion in remaining oil and half the butter; add garlic, then arborio rice, stirring 1 minute.
Add hot stock one ladle at a time, stirring and waiting until mostly absorbed before adding more.
After 18–22 minutes, when rice is just tender, stir mushrooms back in.
Take off heat, fold in Parmesan and remaining butter. Rest 2 minutes and serve.
Food safety: ensure poultry is fully cooked, handle raw meat separately, and check packaging for allergens. Times are estimates and ovens vary.