How to Make It
Trim the polenta’s rounded edges to create a rectangle; halve lengthwise. Spread the panko on a plate. Press both sides of the polenta in the panko to coat. In a nonstick skillet, heat 1 tablespoon of the oil. Cook the polenta until crispy, 2 to 3 minutes per side; add 1 tablespoon of the oil after flipping.
Meanwhile, in a bowl, mix the remaining 1 tablespoon of oil with the lemon juice, arugula and olives. Season with salt and black pepper and toss.
Cut the polenta into 16 pieces. Top with the radishes and arugula tapenade.