Step 1

Preheat oven to 350°. In a large bowl, beat brown sugar and butter until blended. Beat in eggs, then vanilla. In another bowl, whisk flour and salt; gradually beat into sugar mixture. Stir in 3/4 cup pecans. Pour into a greased 13x9-in. baking pan; sprinkle with remaining 1/4 cup pecans.

Step 2

Bake until a toothpick inserted in center comes out clean (do not overbake). Cool completely in pan on a wire rack.

Step 3

For icing, in a small saucepan, melt butter over low heat. Stir in brown sugar; cook and stir 30 seconds. Add milk; cook and stir 30 seconds. Remove from heat; whisk in confectioners' sugar until smooth. Immediately drizzle over bars; let stand until set. Cut into bars.