
Recipe information
Total Time
50 minutes
Yield
6 Servings
Ingredients
½
6
1¾
1
1
4
1
½
6
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Preparation
Step 1
Prepare grill for medium-high heat. Whisk oil, vinegar, and ¾ teaspoon mustard in a large bowl. Season dressing with salt and pepper. Transfer 2 Tbsp. dressing to a small bowl; whisk in brown sugar and 1 tsp. mustard. Sprinkle beef all over with salt and pepper, then top with dressing from small bowl.
Step 2
Grill beef until an instant-read thermometer inserted into the thickest part registers 120°–125°F for rare, turning occasionally, about 30 minutes. Place on a cutting board; let rest 10 minutes. Cut very thinly across the grain.
Step 3
Meanwhile, add tomatoes, watercress, and onion to dressing in large bowl. Marinate while beef grills, tossing occasionally. Grill bread, cut side down, until just crusty, about 3 minutes; place on plates, grilled side up.
Step 4
Arrange beef slices over bread. Using tongs and draining slightly, top with salad.