-
Preheat oven to 400°F.
-
Rub crust of bread with garlic clove.
-
Tear bread into 1-inch pieces and place in large bowl; toss with 1/4
-
cup olive oil.
-
Sprinkle bread lightly with salt; arrange in single layer on rimmed baking sheet. Bake until golden and crisp around edges, about 10 minutes. Cool.
-
DO AHEAD: Can be made 4 hours ahead. Let stand at room temperature.
-
Place arugula and radishes in large bowl.
-
Drizzle with 3 tablespoons olive oil and 2 tablespoons lemon juice, adding more lemon juice, if desired.
-
Sprinkle with salt and pepper.
-
Add 2/3 of croutons and half of Parmesan cheese and toss.
-
Transfer to serving bowl; scatter remaining croutons and Parmesan cheese over and serve.