One of the key ingredients in the Tex Mex Eggrolls is?

The key ingredient in Tex Mex Eggrolls that makes them unique and flavorful is black beans. Black beans are a staple in Tex-Mex cuisine, adding both texture and a rich, earthy flavor to dishes. When combined with other ingredients in the eggrolls, they create a delicious filling that captures the essence of Tex-Mex flavors, enhancing the overall taste experience for diners.

While the other ingredients mentioned, such as refried beans, cheddar cheese, and bell peppers, may contribute to similar dishes within the Tex-Mex genre, black beans are particularly significant in this recipe due to their prominent role in providing the authentic flavor profile typical of Tex Mex cuisine.