Walnut Penuche

1 1/2 cups (6 ounces) walnuts, coarsely chopped
2/3 cup butter
1 cup packed light brown sugar
1 (14 ounce) can sweetened condensed milk
1 1/2 teaspoons vanilla extract

Line an 8-inch square pan with foil, letting it extend above 2 sides. Grease lightly.

Spread nuts in a 9-inch microwave safe pie plate. Microwave, uncovered, on HIGH for 6 to 7 minutes, stirring 3 times until lightly toasted.

Melt butter in a 2 1/2- or 3-quart microwave safe bowl. Stir in sugar and milk until blended; microwave, uncovered, on HIGH for 7 to 9 minutes, stirring 4 times until sugar thickens and is a medium caramel color.

Using pot holders, move bowl to heat-proof surface. Add vanilla extract. Beat with a electric mixer for 3 to 4 minutes or until smooth and shiny. Add walnuts and beat on low speed 1 minute to distribute evenly. Spread in prepared pan. Let cool, cover, and refrigerate until firm - 2 to 3 hours.

Holding foil ends, carefully lift candy to cutting board. Peel off foil. Cut candy in 1-inch squares. Store tightly. Covered in a cool place.