The present disclosure generally provides pediatric nutritional compositions comprising a protein source comprising an intact milk protein and a partially hydrolyzed milk protein, wherein about 5% to about 25% of total nitrogen content of the composition is non-protein nitrogen. The pediatric nutritional compositions described herein also comprise a fat source and a carbohydrate source. The partially hydrolyzed protein source, in certain embodiments, provides peptides that have similar structure and function to the peptides found in human milk.