Roast Beef with grapes

2 lbs boneless rump steak or 2 lbs rib roast kosher salt and pepper 1 pint grape tomatoes 1 head garlic , cloves peeled 8 sprigs fresh thyme 3 tablespoons[...]

2 lbs boneless rump steak or 2 lbs rib roast 1 1/4 teaspoons kosher salt 3/4 teaspoon pepper 1 pint grape tomatoes 1 head garlic , cloves peeled 8 sprigs[...]

4 medium red potatoes, each cut into 8 wedges 1/4 cup water 1/2 red onion , thinly sliced 1 lb roast beef 1 pint grape tomatoes , cut in half lengthwise 9[...]