Chicken Breast With Toasted Mustard Seed
["2 c. heavy cream", "3 Tbsp. Dijon mustard", "3/4 tsp. salt", "1 tsp. fresh ground pepper", "1 1/2 Tbsp. yellow mustard seed", "6 whole chicken breasts, boned and skin on", "2 tsp. lemon juice", "3 large scallions, thin sliced"]
["Preheat oven to 500\u00b0.", "In medium saucepan, bring cream to boil. Reduce and cook over low, stirring constantly, until thickened and reduced to 1 1/4 cups (about 10 minutes).", "Remove from heat and whisk in mustard, 1/4 teaspoon salt and 1/2 teaspoon pepper. (Cream mixture can be made 4 hours ahead.", "Whisk occasionally to prevent skin.)"]
["heavy cream", "mustard", "salt", "fresh ground pepper", "chicken breasts", "lemon juice", "scallions"]