Finish the Stroganoff

Return the pan to a medium heat with another drizzle of oil. When hot, sauté the sliced onion for 3-4 minutes until soft. Add the smoked paprika to taste and sauté for 1-2 minutes until fragrant. Stir through the flour and cook for a minute, shifting constantly. Gradually add the diluted stock, stirring continuously to prevent lumps. Once combined, simmer for 4-6 minutes until thick and smooth. Add in the beef and mushrooms, and cook for 2-3 minutes until reheated. Stir through the crème fraîche for about 1 minute until combined. Remove from the heat and season to taste.