White Chocolate Pecan Mousse Pie
["1 prebaked pie shell", "2 Tbsp. butter", "6 oz. vanilla baking chips", "2 c. whipping cream", "1 tsp. vanilla", "2 c. chopped pecans", "1/4 c. milk", "1/3 c. sugar"]
["Bake pie shell.", "Cool.", "Melt butter in a 10-inch skillet over medium heat; stir in pecans.", "Cook until pecans are golden brown. Cool at room temperature for 1 hour."]
["shell", "butter", "vanilla baking chips", "whipping cream", "vanilla", "pecans", "milk", "sugar"]