Roasted Salmon and Olive-Mustard Butter and Orzo

Preparation

1. Step 1

   Mix first 5 ingredients in processor until well blended but still slightly chunky, occasionally scraping down sides of bowl. Season butter mixture to taste with salt and pepper. Transfer to small bowl. (Olive-mustard butter can be prepared 2 days ahead. Cover and refrigerate. Soften slightly at room temperature before using.)

   Step 2

   Preheat oven to 400°F. Brush large rimmed baking sheet with olive oil. Arrange salmon fillets on prepared sheet; sprinkle with salt and pepper. Roast salmon just until opaque in center, about 14 minutes.

   Step 3

   Meanwhile, cook orzo in large pot of boiling salted water until tender but still firm to bite. Drain; return orzo to same pot. Add half of olive-mustard butter and toss to coat. Divide orzo among 8 plates. Top each serving with 1 salmon fillet. Place small dollop of olive-mustard butter atop each salmon fillet. Garnish with whole olives and parsley sprigs, if desired, and serve.