chocolate toffee cookies

Ingredients in this Recipe

1 3/4 cups (packed) brown sugar
1 cup walnuts, toasted, chopped
1 pound bittersweet (not unsweetened) or semisweet chocolate, chopped
1 tablespoon vanilla extract
1 teaspoon baking powder
1/2 cup all purpose flour
1/2 teaspoon salt
1/4 cup (1/2 stick) unsalted butter
4 large eggs
5 1.4 ounce chocolate covered English toffee bars (such as Heath), coarsely chopped*
Flaky sea salt for sprinkling (optional)

See Full Recipe at Smitten Kitchen