The present disclosure provides recombinantly expressed insulin polypeptides that comprise an N-linked glycan motif. The N-linked glycan motif is not present in wild-type insulins and enables the recombinant expression of glycosylated insulin polypeptides (e.g., in yeast cells). Based on results obtained with synthetic glycosylated insulin conjugates we predict that when these recombinant glycosylated insulin polypeptides are administered to a mammal, at least one pharmacokinetic or pharmacodynamic property of the glycosylated insulin polypeptide will be sensitive to serum concentrations of glucose (or an exogenous saccharide such as alpha-methyl mannose). Exemplary insulin polypeptides, polynucleotides encoding these insulin polypeptides, glycosylated insulin polypeptides, pharmaceutical formulations and sustained release formulations are provided in addition to methods of use and preparation.