Vegetable-Enriched Brownies: A Healthier Twist on a Classic Treat

In response to concerns about high-fat and low-fiber diets, this study modified a traditional brownie recipe by replacing butter with plant-based ingredients, including sweet potatoes, red beans, beetroot, zucchini, pumpkin, lentils, and spinach. The goal was to increase vegetable consumption while identifying the best vegetable fat replacer using sensory and instrumental analyses.

Chemical analyses were conducted to measure dry matter, protein, fat, ash, and dietary fiber, alongside texture, color, and sensory evaluations.

The butter replacement led to a significant reduction in fat content, up to three-fold, and a decrease in caloric value by 57% while increasing dietary fiber and ash levels. Sweet potato brownies (SPB) had the highest fiber and ash content, while zucchini brownies (ZB) exhibited improved texture due to greater moisture retention. Sensory assessments showed that classic brownies (CB) ranked highest in appearance, taste, and texture, while lentil (LB) and spinach brownies (SB) had lower acceptability.

Incorporating plant-based ingredients into brownies significantly improves their nutritional profile but can affect sensory attributes. Further optimization is needed to balance nutritional benefits with consumer preferences, offering a promising approach to increasing vegetable intake through a popular dessert.