Tilapia with Grapefruit-Caper Sauce

Slice both ends off one grapefruit. With a sharp knife, remove the peel and white pith; discard. Working over a small bowl, cut the segments from their surrounding membranes. Set aside. Juice the second grapefruit into another small bowl. Drain any accumulated juice from the segments into the bowl with juice.

Heat oil in a large nonstick skillet over medium-high heat. Sprinkle both sides of fish with 1/4 teaspoon salt and pepper. Add the fish to the pan and cook until browned and opaque in the middle, 3 to 5 minutes per side. Remove to a plate, leaving behind as much oil as possible. Tent with foil to keep warm.

Add shallot to the pan over medium-high heat; cook, stirring, until starting to brown, about 1 minute. Add the grapefruit juice, capers, butter, honey and remaining 1/4 teaspoon salt and cook, stirring, until the sauce has thickened slightly, 1 to 2 minutes more. Remove from the heat and stir the grapefruit segments into the sauce. Serve the fish with the sauce.