Creating these tasty stuffing muffins is a breeze! Just follow these simple steps:

1. Preheat oven: Set your oven to 350°F (175°C). Grease a muffin tin or use muffin liners.
2. Prepare bread: In a large bowl, place the cubed bread and set it aside to stale slightly.
3. Sauté vegetables: In a skillet, melt the butter over medium heat. Add the chopped onion and celery, cooking until softened (about 5-7 minutes).
4. Combine ingredients: Pour the sautéed vegetables over the cubed bread. Stir to mix.
5. Make the mixture: In another bowl, whisk together the broth, eggs, dried sage, dried thyme, salt, and pepper.
6. Mix well: Pour the broth mixture over the bread and vegetables. Stir until everything is evenly moistened. If using, add optional ingredients and mix well.
7. Fill muffin tins: Spoon the stuffing mixture into the prepared muffin tin, pressing down lightly to compact.
8. Bake: Place the muffin tin in the preheated oven and bake for 25-30 minutes or until golden brown.
9. Cool: Once baked, remove from the oven and allow the muffins to cool in the tin for about 5 minutes. Carefully transfer them to a wire rack to cool completely.

These steps will help you create fantastic stuffing muffins that are sure to satisfy!