Hi Kathy, our Gluten-Free Measure for Measure flour substitutes well for either all-purpose flour or whole wheat flour in regular cake, cookie, muffin and other non-yeasted recipes. We don't recommend substituting it for pastry flour or cake flour. If you wanted to experiment, I suspect you'll need to add less of the Measure for Measure flour (as compared to the pastry flour), or perhaps add a little more fat and a little liquid (milk, water, or an extra egg) to the recipe. 

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