1 (3 to 4-pound) boneless bottom round roast
Kosher salt and freshly ground black pepper
1/4 cup vegetable oil
2 yellow onions, peeled and quartered
3 cloves garlic, smashed
1 tablespoon tomato paste
1 cup red wine
2 cups beef stock
2 fresh thyme sprigs
2 bay leaves
3 carrots, peeled and sliced into 1/2-inch pieces
Freshly chopped parsley leaves, for garnish