Preheat oven to 350F. Mix all the dry ingredients together in a bowl and set aside. In a separate bowl, add the eggs, sour cream, herbs, swerve and butter, then mix to combine. Mix in the dry ingredients, just until combined.
Pour the mixture into an 9 X 12 glass or ceramic baking dish that's been sprayed with nonstick spray. Bake for 25 minutes or until a toothpick, when inserted, comes out clean.
Lower the temperature to 250F. Invert onto a cutting board to cool slightly, then cut into small cubes and spread over a baking sheet lined with parchment paper. Bake for 25 minutes or until the bread has dried and firmed up, careful not to burn it! Remove and set aside to cool slightly, and increase the temperature to 375F. Bake for 5 more minutes, then set aside.
To Make the Stuffing
Cook the sausage in a large skillet over medium heat. Once browned, scoop out and set aside. Add most of the butter (reserving some to dot on the top of the stuffing) in the pan and sauté the onions, fennel and celery for about 8-10 minutes or until slightly softened.
Add the sausage, onions, celery and fennel to a large bowl and mix. Mix in the chicken stock, herbs and pecans. Add in the cubed herb bread and gently toss. Add more chicken stock if you prefer a more soggy stuffing. I prefer mine moist, but a little crunchy on top once baked, so 2 1/2 cups is the perfect amount for me.
Pour the mixture into a large baking dish that has been sprayed with nonstick spray and add small dots of softened butter to the top. Bake for 40 minutes @ 375F, first 30 minutes covered with foil and last 10 minutes uncovered. Allow to cool slightly before serving!
You can replace the pecans with walnuts or pine nuts, if you'd like. You can make the herb bread in advance and toast the day you plan on making the stuffing. Keep in the fridge until you are ready.The Oat Fiber is important in this recipe, as it gives a great bread-like texture. I use Lifesource Foods Oat Fiber 500, because it’s ground to a fine powder and has a very mild flavor.Oat Fiber is not the same as Oat Flour, which is made from grinding oats. Oat Fiber is made from grinding the outer husks of oats and is pure insoluble fiber. Insoluble fiber does not dissolve in water and is not broken down in the digestive tract, so it’s Low Carb and Keto friendly.