Sourdough Bread Bowls: There are two ways to make them, using either 20 eight-ounce sourdough bread loaves or ten 1-pound round sourdough bread loaves. If using 20 eight-ounce bread loaves, cut off tops.
Using small knife, cut out centers, leaving 1-inch shell. Or, use 10 one-pound loaves, cutting each horizontally in half. Cut off thin slice from top half of each loaf. Turn top of loaf trimmed side down.
Cut out center of top and bottom halves, leaving 1" shell. Reserve trimmings for another use. (Can be made 1 day ahead. Cover; let stand at room temperature.) Preheat oven to 400. Brush insides of bread bowls with melted butter. Place bread bowls on oven racks. Bake until crusty and brown, about 15
minutes. Transfer bread bowls to wire rack to cool. Great for serving chili. Yield: 20 bowls.

If you want to make them rather than buy them, just use any sourdough bread recipe.

Have fun!!