Preparation method of polysaccharide-removed sargassum fusiforme dietary fiber cookies

The invention provides depolysaccharide sargassum fusiforme cookies. The depolysaccharide sargassum fusiforme cookies are prepared from the following raw materials in parts by weight: 120 to 160 parts of low-gluten flour, 25 to 40 parts of corn starch, 10 to 20 parts of depolysaccharide sargassum fusiforme superfine powder, 50 to 100 parts of erythritol, 30 to 60 parts of eggs and 100 to 150 parts of butter. The preparation method comprises the following steps: (1) preparing depolysaccharide sargassum fusiforme superfine powder; (2) preparing materials according to the raw material composition of the polysaccharide-removed sargassum fusiforme cookies, softening the butter, performing primary whipping, and adding erythritol for multiple times in the primary whipping process; further adding eggs and carrying out secondary whipping; (3) uniformly mixing low-gluten flour and corn starch, sieving into the whipped base material, and stirring until the mixture is uniform and no powder exists; (4) loading the dough i