Prepare as directed through Step 2. Meanwhile, preheat oven to 350°F. Bake brownies just until set in center and edges are firm and pull away from sides. Allow 15 to 20 minutes for large skillet or about 20 minutes for small skillets. Peel bananas; halve lengthwise. Cut each half crosswise. In another large skillet cook bananas in 1 tablespoon hot butter over medium-high heat about 5 minutes or until golden brown. Serve as directed in Step 4.