I've been making brownies lately, and my last brownie turned out like dwarf bread. As the recipe and the oven/time haven't changed, my guess is that the preparation went wrong.
I mixed all the ingredients, (just like always) and then walked away to have lunch. After lunch, I tried to pour the batter in the mold, but it was impossible to pour.
Is my analysis correct and, more importantly, is there anything that can be done if the batter does have to sit for a while? Can it be gently heated?
Edit Chocolate & Margarine gently heated together. Sugar and Eggs beaten. Mixed together. Added flour & hazelnut.