holiday brownies - Lisi's Kitchen

Ingredients

• 1 cup (2 sticks) unsalted butter
• 3 ounces unsweetened chocolate
• 1/2 cup unsweetened dutch processed cocoa powder
• 2 1/2 cups sugar
• 1/2 teaspoon kosher salt (if using table salt, cut in half)
• 1 tablespoon vanilla extract
• 3 large eggs
• 1 1/2 cups all-purpose flour
• chocolate chips (optional)
• toasted nuts (optional)