How to Make It
In a large pot of boiling salted water, cook half the broccoli rabe until tender, 3 minutes. Using a slotted spoon, transfer to a colander to drain. Repeat with the remaining greens. Squeeze the excess water from the broccoli rabe and coarsely chop.
In a bowl, blend the butter with the lemon zest; season with salt and pepper.
In the large pot, heat 1 1/2 tablespoons of the olive oil. Add the pine nuts and cook over moderate heat until golden, about 4 minutes. Using a slotted spoon, transfer the pine nuts to a plate. Heat the remaining 1 1/2 tablespoons of olive oil in the pot. Add the garlic and cook over moderate heat until sizzling, about 3 minutes. Add the chopped broccoli rabe and toss well. Add the lemon-butter and lemon juice and stir well. Season with salt and pepper and transfer to a serving bowl. Top with the pine nuts and ricotta salata and serve.