Why did my filling not get hard? It is still very runny? What did I do wrong? I am doing it now, hope you can help me please?
It may have needed to bake longer. Even though you set your oven to the temp required, the oven may not have been at that temp - It may also set up as it cools so don;t despair yet. I wouldn't put it back into the oven unless it's been out less than 10 minutes. If so, then you could try baking it a bit longer
What I meant is that when I was reducing the syrup and sugar, it did not thicken, it is still runny, but it did reduce down to 1 cup, will it still work?
It wouldn't have gotten hard just thicker. If you reduced it and now you have 1 cup; then it should be ok