Spinach Bread Dip Ingredients 1 package frozen spinach 1 cup mayonnaise 1 cup sour cream 1 red onion chopped 1 tin water chestnuts 1 package (I use Knorr's) Swiss vegetable soup mix Method Put all ingredients in the food processor or blender and mix. Hollow out a round sourdough loaf or Dutch loaf; pour in the spinach mixture. Heat in 350°F oven for 20 minutes before serving. Use the bread scraps for dipping.