Slow Cooker Beef Stroganoff

1.75kg/ 3.5lb beef chuck or other stewing beef , cut in 4cm / 1.5” cube (Note 1)、1.5 tsp each salt and pepper、2 tbsp oil、20g/ 1 tbsp butter , unsalted、1 large onion , halved then sliced into 1 cm / 2/5" slices、4 garlic cloves , minced、4 tbsp Dijon Mustard、7 tbsp (60g) flour , plain / all purpose、1 litre / 1 quart beef stock/broth , reduced salt、1.5 cups (300g) sour cream , full fat best、3tbsp/ 45g butter , unsalted、700g / 1.2lb mushrooms , sliced into 0.5cm thick slices、3 garlic cloves , finely minced、1/2 tsp salt and pepper、Pasta, wide egg noodles, mashed potato、Chives for garnish

2 做过

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