Grill-Roasted Rib Roast With Grilled Onion Toasts & Grilled Apple Horseradish - PB on Life

Ingredients

• 3-bone standing rib roast of beef
• 5 tablespoons (2½ fl oz/ 60 ml) extra-virgin olive oil
• 1 teaspoon coarse sea salt, preferably sel gris
• 1 teaspoon freshly ground pepper
• 2 large sweet onions, sliced ¼ inch (6 mm) thick
• I large tart apple such as Granny Smith, peeled, halved, cored, and cut into slices ¼ inch (6 mm) thick
• 1 teaspoon sugar
• 1/3 cup prepared white horseradish
• teaspoons brown mustard
• 4 teaspoons honey
• 12 slices baguette