French Onion Baguette

So I liked the French Baguette so much I decided to play with it just a little, This version is the Onion Baguette!
For more pictures of the bread making process look at the French Baguette post below!

Ingredients
- 2 1/2 cup Bread Flour
- 1 Cup water
- 2 1/2 tsp yeast
- 1 Tablespoon white sugar
- 1 tsp salt
- egg yolk
- 1 tsp water
- 1 medium onion
- 2 tablespoons butter

Directions
1. Proof the yeast in the warm water with the tablespoon of sugar for about 5 minutes
2. Add the flour and kneed together with greased hands until well mixed
3. add the tsp of salt
4. coat dough with grease ( I use butter) and let rise until doubled in bulk
5. while bread dough is rising cut one onion into small pieces and add to a pan with butter over low heat and slowly cook until translucent (about 30 minutes) then add about 1 tsp garlic salt and 1/2 tsp black pepper.
6. punch out air and flatten evenly about 1/4 inch thick
7. cut in half
8. spread the onion mixture over the dough leaving 1/2 inch boarder around.
9. Roll up and pinch the loaf shut
10. Let rise until doubled in bulk again (45 minutes depending on room temperature and humidity)
11. Mix yolk with 1 tablespoon water and brush over bread
12. preheat oven to 375
13. bake the bread for 20-25 minutes toss some water along the oven wall every minute for the first 3-4 minutes to create steam for a crispy crust.
14. remove and let cool slightly
15. serve!!