Ingredients
2 teaspoons whole-grain mustard
2 tablespoons red-wine vinegar
1/4 cup minced shallot
1/4 cup olive oil, plus more for drizzling
Salt and pepper
1 log (18 ounces) prepared polenta
1 halved head romaine
1 quartered head radicchio
Preparation
Whisk mustard, vinegar, shallot, and 1/4 cup olive oil. Season with salt and pepper.
Heat grill to high. Slice polenta into thirds lengthwise, drizzle with olive oil, and season with salt and pepper. Grill polenta until lightly charred, 2 minutes per side, then cut into croutons. Drizzle romaine and radicchio with olive oil and season with salt and pepper. Grill lettuces, cut sides down, until slightly wilted and charred, about 1 minute. Arrange greens and croutons on a platter and drizzle with vinaigrette.
