How to make part bake baguettes and rolls?
To make your own part-baked rolls, you have to actually part-bake them, not just freeze the shaped dough. You can freeze shaped dough, but you then need to fully thaw it and let it 'wake up' again before baking.

You need to part bake at a relatively low temperature so that the dough springs and sets, but a crust does not form. About 20 minutes at 150°C/300°F should do the trick. Then allow them to cool, put them in freezer bags, and freeze. They will keep for 3 or 4 months.

When you want to bake them, you need a much hotter oven - about 220-230°C/445°F. Bake straight from frozen until golden brown, about 20 minutes.