Step 1Trim the ends from the radicchio. Tear the leaves into bite-sized pieces. You should have about 8 cups. Set aside while preparing the dressing.
Step 2Place the anchovies and garlic in a blender. Blend at high speed, adding 3/4 cup of oil in a thin stream. Blend in the lemon juice. Add salt and pepper to taste.
Step 3Heat the broiler or an indoor grill.
Step 4Brush the bread slices with the remaining 2 tablespoons of oil. Broil or grill the bread until browned on both sides. Tear the bread into bite-sized croutons.
Step 5Drizzle about 1/4 cup of the dressing over the radicchio and toss to coat. Add the croutons and toss again. Serve the remaining dressing on the side (reserve any leftover for another use).