Beef Cheeks with Mushrooms

Ingredients

• • 4 beef cheeks, excess fat removed
  • 1 tbsp (15 ml) olive oil
  • 1 lb (450 g) mixed mushrooms (oyster, shiitake, honey mushrooms), coarsely chopped
  • 3 tbsp butter
  • 1 package (175 g) small white pearl onions, peeled (see note)
  • 2 garlic cloves, chopped
  • 2 tbsp unbleached all-purpose flour
  • 1 tsp sweet paprika
  • 1 cup (250 ml) white wine
  • 2 cups (500 ml) mushroom or beef broth
  • 1 thyme sprig
  • 1/4 cup (60 ml) sour cream
  • Chives, finely chopped, to taste (optional)