What is the primary ingredient in the Chocolate Thunder from Down Under dessert?

The primary ingredient in the Chocolate Thunder from Down Under dessert is a chocolate pecan brownie. This dessert features a rich, moist brownie base that is complemented by other ingredients, including chocolate sauce and whipped cream, creating a decadent and satisfying treat. The chocolate pecan brownie serves as the foundation of the dish, delivering a deep chocolate flavor and a fudgy texture that is essential to its overall appeal. The use of brownie rather than other chocolate confections, such as mousse, cake, or cookies, highlights the dense, chewy qualities that characterize this signature Outback Steakhouse dessert.