1. Preheat oven to 350˚. Line a 13x9-inch baking pan with foil, letting excess extend over sides of pan; spray foil with cooking spray.
2. In a medium microwave-safe bowl, cook butter and chocolate on high in 30-second intervals, stirring between each, until chocolate is melted and mixture is smooth (about 1½ minutes total). Let cool for 15 minutes.
3. In a large bowl, beat sugar and eggs with a mixer at medium-high speed until fluffy, about 3 minutes. Beat in extract. In a medium bowl, whisk together flour and salt. Gradually add flour mixture to sugar mixture, beating until combined. Beat in chocolate mixture and 1 cup pistachios. Pour batter into prepared pan.
4. Bake until a wooden pick inserted in center comes out clean, 30 to 35 minutes. Let cool completely in pan on wire rack.
5. Spread Orange Cream Frosting onto brownie, and sprinkle with remaining ½ cup pistachios. Using excess foil as handles, remove from pan before cutting into squares. Refrigerate in an airtight container for up to 5 days.
Instructions
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/orange-pistachio-brownies-recipe/