Beef and carrot casserole

Ingredients (4 servings): 1½ tablespoons Olive Oil 750g beef steak, trimmed and cubed ¼ cup flour 1 leek, trimmed, washed and sliced 1 garlic clove, crushed 1 tablespoon ground cumin 2 teaspoons ground ginger 2 cups salt-reduced beef stock 6 carrots (medium size), cut into wedges 400g diced tomatoes ½ cup pitted green olives ¼…