Hardness is the most valued textural parameter in this kind of products. In Table 5, the hardness values and the number of bubbles calculated by image analysis for each recipe are shown. Muffins elaborated employing 100% granules presented the highest hardness value. This parameter is directly related to the density of the tested sample. Thus, a hardness increment corresponds to a muffin with fewer bubbles as well as to an increment in the protein-based interactions in the gel matrix