Trim and discard coarse leaves and tough stem roots from broccoli rabe. Cut off florets. Peel large stems and cut stems and leaves into 1 1/2-inch pieces. Rinse and drain. In a large skillet set over moderate heat cook the garlic in the oil until lightly golden. Add the broccoli rabe, broth, red pepper flakes and salt to taste and cook the mixture, over moderately high heat, partially covered, stirring occasionally, for 3 minutes. Add the cannellini beans and cook, stirring occasionally, until broccoli is just tender and beans heated through.
In a pot of boiling salted water cook the orecchiette until al dente. Drain. Add broccoli rabe mixture and toss to combine.