Ingredients:
- 1 1/2 pounds ground beef chuck, 80 percent lean
- 2 teaspoons salt
- 3/4 teaspoon freshly ground black pepper
- 2 beefsteak tomatoes (slightly under ripe is best)
- 1/2 teaspoon smoked paprika
- 1 tablespoon olive oil
- 6 ounces gorgonzola cheese, crumbled or cut into 1/2-inch cubes
- Six 4-inch ciabatta rolls (square or round) or your favorite burger bun, halved horizontally
- 1 cup fresh arugula