Try this Spinach Bread recipe.
Incorporating wet greens into yeast dough requires deliberate moisture management to prevent a soggy interior crumb. Fresh spinach contains substantial water that must be thoroughly drained and pressed after cooking, utilizing the reserved vegetable liquid strictly as needed during kneading to control dough hydration. Whole wheat flour absorbs moisture differently than refined white flour, requiring an extended initial sponge resting period of one hour to soften the bran and permit proper gluten development.
For optimal preservation, bake the oblong loaf fully, allow it to cool completely on a wire rack for at least 45 minutes, and wrap tightly in plastic followed by aluminum foil before freezing for up to three months. Reheat frozen slices directly in a 350 degree Fahrenheit oven for 10 minutes to restore the crust without drying out the interior cheese and spinach filling. When adapting this formula, substituting regular cow's milk feta with goat cheese changes the moisture content slightly, meaning less reserved cooking liquid should be added during the initial mixing phase.