House of Whey is a Flintshire bakery making handmade protein brownies, blondies, protein cookies, cookie brownies and protein bars in North Wales. Brownies are the principal product, with blondies and cookie-based variations extending the baked selection. The bar range includes Protein Chocolate Bars and Protein Chocolate Cookie Bars, adding a different format alongside the brownies and blondies. Added protein is incorporated across the range while the products retain familiar brownie, blondie, cookie and chocolate-bar forms.