Melt ½ stick of butter in a skillet on medium high heat and sauté the chopped celery and onion until tender.
Mix
Put your bread cubes in a large bowl. If you don't have a bowl large enough use a large saucepan like a dutch oven.
In a small bowl or measuring cup, mix together the celery, onions and melted butter, broth, eggs, Bell's seasoning and salt. Gently fold the mixture into the bread cubes. You want the bread to remain in cubes not mashed up.
Put the stuffing in a shallow baking dish that has a cover or an oven safe skillet with a tight fitting lid. Use aluminum foil to cover the baking dish tightly if you don't have a cover.
Slice the remaining 1/2 stick of butter into slices and place them over the top of the stuffing.
Bake
Cover the baking dish or skillet tightly and bake at 350 degrees for 30 minutes for a 10 x 10 in baking dish. Add time if the dish is smaller and decrease the time if you are using a larger rectangular baking dish.
When the stuffing is done the edges will pull away from sides of the dish slightly. Also, if you stick a fork in the middle the inside should be moist but not mushy. Keep in mind that there are eggs in the stuffing and if the middle is mushy it would indicate they are not fully cooked. They need to be fully cooked.