Pot Roast Beef With Roasted Vegetables

3 red onions , cut into 8 wedges 7 tablespoons extra virgin olive oil 1/4 cup balsamic vinegar 1 cup mayonnaise 1/4 cup chopped fresh basil 1 1/2 tablespoons[...]

6 lbs beef chuck (at room temperature) 2 teaspoons chopped garlic 2 teaspoons McCormick's Montreal Brand steak seasoning (to taste) 1 teaspoon kosher salt 2[...]

2 beef bouillon cubes 1 tablespoon oil 1 1/2 kg beef 5 leeks 6 parsnips 6 carrots 4 shallots 1 head celery sage 1 Preheat your oven to gas 7, 220C, fan[...]