What food makes your butt bigger, incorporating certain nutrients into your diet can support muscle growth and overall body composition. Protein-rich foods like lean meats, fish, eggs, and legumes provide essential amino acids necessary for muscle repair and growth. Healthy fats from sources like avocados, nuts, and seeds contribute to overall body fat distribution, including the buttocks. Carbohydrates from whole grains, fruits, and vegetables provide energy for workouts to build muscle. Incorporating a balanced diet with strength training exercises targeting the gluteal muscles can help achieve a fuller and firmer buttock appearance over time.