01 -
Preheat the oven to 350°F (175°C). Grease a 9x5-inch loaf pan and line it with parchment paper, leaving overhang on the long sides.
02 -
In a large bowl, whisk the eggs, oil, and room-temperature hot fudge sauce until glossy and mostly smooth.
03 -
Add the brownie mix and stir just until no dry streaks remain. Fold in the chocolate chips without overmixing.
04 -
Spread the thick batter into the prepared pan. Smooth the top and tap the pan gently on the counter to settle the batter.
05 -
Bake for 45-55 minutes, until the top is set and a toothpick inserted near the center comes out with moist crumbs but no wet batter.
06 -
Cool in the pan for at least 45 minutes, then lift out with the parchment. Slice when fully cooled and drizzle with warm fudge sauce if desired.