I was too ambitious in my baking plans for the night. I've got some pound cakes in the oven baking now and I'd planned to put in some muffins when the cakes came out but I think I'll be too tired. I'd love to just make the batter tonight and bake them off in the morning but will the muffins suffer if the batter is left in the fridge until morning? I have a feeling they might. Anyone tried this before?