Preheat oven to 375 degrees Fahrenheit. Grease a 5 and 1/2 x 8 inch loaf pan with cooking spray.

In a sauté pan warm the oil on medium heat. Once heated, add the carrots, leek, and fennel and sauté for 10 minutes, adding salt and white pepper to taste. Remove from heat and let it cool while you do the next steps.

In a medium bowl, place the defrosted gefilte fish and mash it with a fork.

In a small bowl, whisk the eggs, matzah meal, vegetable stock, salt, white pepper, and sugar.

Whisk until thoroughly combined. Add it to the bowl of gefilte fish. Then add the cooled vegetable mixture. Mix it all together with a fork and then place it into your prepared pan.  Sprinkle the top with sweet paprika. Spray cooking spray on a sheet of silver foil and cover the pan (to prevent the fish from sticking to the top).

Bake in the oven for one hour. Let it cool completely before slicing. Garnish with fresh dill if desired.

Combine all the ingredients in a food processor and purée until smooth. Add more water for desired consistency. Add salt to taste.