Does anyone know if the lemon filling that comes in the clear plastic long sleeve can be used as filling for a lemon pie? Will it run after baking in oven to brown merignue?

I truly don,t think you can use this filling for a pie. Lots of good lemon pie fillings on internet. Also Paula Deen and Ina Garten. hth

beachygirl,
You really don't want to use that filling for a pie. It's already as solid as it can get and that's not solid enough for a lemon meringue pie. I make two types, an easy version and a more complicated version. If you are looking for a simple lemon pie that is yummy try this: Add four egg yolks and a 1/4 cup fresh lemon juice to one can of sweetened condensed milk (like Eagle brand).
Add a tsp of finely grated lemon rind. Beat it with an electric mixture for two or three minutes on high speed. Put it in a pre-baked crust, add your meringue and bake at 350 degrees until tinged with brown and then refrigerate for several hours. The lemon juice actually cooks the eggs so don't worry about any raw egg taste. People will think you spent hours over a hot stove.