For the filling beat the soft cheese on a low speed until loosened and creamy. Add in the caster sugar, honey, flour, a pinch of salt and vanilla bean paste. Scrape down the sides of the bowl well to ensure the ingredients are combined. Break 3 of the eggs into a jug, along with the yolk of the remaining egg. Add into the mix one egg at a time, mixing well after each addition but taking care not to overbeat. Stir the soured cream to loosen before adding the final ingredient. Continue to mix on a low speed to ensure all ingredients are well combined.