Name: Sweet & Salty Brown Sugar Bars
Ingredients: 1/2 cup 1 stick unsalted butter; 1 cup light brown sugar (packed); 1 large egg; 1 tablespoon vanilla extract; 1 cup all-purpose flour; 1/4 teaspoon kosher salt; 1 cup of your favorite sweet and salty mix-ins (I used a mixture of mini pretzels, roasted almonds, M&Ms, Rolos, and Snickers Bites!)