Preheat oven to 375°F. Line baking sheet with foil.

Cut orange in half. Cut 2 thin slices from each cut half of orange, yielding 4 slices. Squeeze 1/4 c of juice from orange halves in microwaveable bowl.

Add butter to bowl and melt in microwave, about 30 seconds. Mix in garlic and 1/8 tsp salt.

Distribute broccolini and onions in middle of foil. Lay salmon over veggies and sprinkle with remaining salt. Drizzle on juice. Top with orange slices. Sprinkle with paprika.

Cover with another piece of foil, folding edges to seal packet. Bake 20 min. or until salmon Is cooked through and veggies are tender.