NYT Cooking: This quick, one-pan meal relies heavily on pantry staples. Browning pancetta or bacon adds richness to the tomato sauce, but skip it if you like. Anise-flavored fennel and seeds are incorporated into the soffrito, which plays nicely with the sweetness of the shrimp and the creaminess of the beans. But if you don’t like them, leave them out. Serve the dish in deep bowls with thick slices of garl...