Preheat oven to 170° On a large baking sheet, place cubed bread evenly and bake until dried out (approx. 1 hour). Remove from heat and set aside.
Increase oven temperature to 350° Spray a 9x13 baking dish with baking spray. Set aside.
In a large skillet, add ¾ cup of butter over medium heat.
Once butter has melted, add diced onion and celery to skillet. Cook for approx. 10 minutes or until the vegetables have softened, stirring frequently.
In a small bowl, whisk eggs and remaining chicken broth. Add to bread mixture and toss until well combined.
Add bread mixture to prepared baking dish and distribute evenly.
Dice remaining ¼ of butter into small cubes and sprinkle evenly over stuffing.
Cover with foil and bake for 40 minutes. Remove foil and bake an additional 40 minutes.
Serve immediately and enjoy!