Prepare the Bread: Slice the sourdough bread into cubes and lay them in a single layer on a sheet pan. Allow the bread to dry overnight. Alternatively, bake the bread cubes at 325°F (175°C) for 10-15 minutes to dry them out.
Move the day-old or recently baked bread cubes to a large bowl. Add the poultry seasoning (or fresh herbs), salt, and black pepper. Toss to combine.
Stovetop:
In a large saucepan or skillet with a lid or saucepan, melt the unsalted butter (or heat the olive oil) over medium heat.
Stir in the seasoned bread cubes to coat with the melted butter. Pour in 1 and ½ cups broth and stir (add additional water if it seems dry). Reduce the heat to low, cover, and cook for 10 minutes, stirring halfway through.
Remove from heat and let the stuffing sit for 10 additional minutes, covered.
Stir the stuffing to fluff it up and then serve.
Baked:
Preheat your oven to 350°F (175°C) and grease a 3 Quart or 9x13 inch baking dish.
Melt the butter and pour into the mixing bowl with the bread, tossing to coat. Stir in 2 cups of broth or water and then transfer the bread mixture to the prepared baking dish (add an additional cup if it seems dry).
Cover with aluminum foil or an oven-safe lid and bake for 25 minutes in the preheated oven. Then, uncover, stir and bake for an additional 15-20 minutes or until the top is lightly golden brown.
Remove from the oven and serve.
Slow Cooker:
Grease the bottom of a 3 quart or larger slow cooker.
Follow steps 1 and 2 of the stovetop method. Add the bread to the base of the slow cooker. Melt the butter and pour over the bread, tossing to coat. Stir in the broth or water.
Cook on low for 4-5 hours until tender and lightly crisp on the edges.*Tip: To help absorb moisture, you can lay a clean kitchen towel over the top of the slow cooker (under the lid), leaving overhang out of the lid on all sides.
Serve warm.
Notes
LeftoversStore leftover sourdough stuffing in an airtight container in the refrigerator for up to 4 days or freeze for up to 3 months.Reheat in the microwave or in the oven at 350°F (175°C) with a splash of broth or water until warmed through, about 15-20 minutes.*If using salted butter, reduce salt in recipe by ¼ tsp.**Depending on the method that you use and how dense your sourdough bread is, you may need more water or broth. I find that I use 1 cup for slow cooker, 1.5 cups for stovetop and 2 cups for oven baked.