https://www.jocooks.com/recipes/cinnabons-cinnamon-rolls/#wprm-recipe-container-15964
That’s the link for the recipe. I use a 9x13 glass Pyrex. 350f
Hope that helps. I also usually tent the dish after the end pieces start to brown before the middle. But it seems most of the time my middle pieces flop
Yes, this info is very helpful Irish Lass 77.
I think it’s a combination of three factors: sugar, water content, and the glass baking dish.
Both flour and sugar are hygroscopic meaning they absorb water from the environment. When there is significantly more flour to sugar, as with a yeast dough, the flour will absorb more of the available water.
The water comes from the milk, butter, eggs. Unlike a cake, a yeast dough has some gluten development, so it does not need the egg for dough strength.
You can reduce the water by reducing the egg to one.
One egg for this amount of flour is sufficient. I in fact have a recipe with the same amount of flour, liquid, and butter. The only differences is the liquid is a combination of water and milk, and it calls for one egg.
The glass baking dish is probably adding to the water problem. Glass takes longer to heat, but once heated, it conducts heat move intensity than metal. Everything bakes from the outside edge toward the center. When the glass baking dish finally gets hot, the dough in direct contact with the baking dish, the edge, bakes at a much faster rate than the center.
The general rule with baking in a glass baking dish is to reduce the oven temperature by 25°F. The exception is using a glass pie plate. When baking pie you definitely want to bake in a very hot oven, around 400°F to start, the 375°F.
You could bake in a metal pan. But if it’s a nonstick pan, anodized metal pan such as Fat Daddio, or a dark colored metal pan, you will have the same heat conductivity issues. So if you will have to reduce the oven temperature by 25°F. My 9” x 13” is non-stick, so I bake my cinnamon rolls at 330°F.
A natural untreated metal pan can bake at 350°F. Now regarding oven temperature I’m assuming you have and use an oven thermometer to ensure the oven is at the correct temperature.
Regarding the filling falling out, I prefer to blend the sugar and cinnamon into the softened butter. Then use a very soft pastry brush to spread it over the dough. There’s never an issue with the cinnamon sugar falling out.
When arranging in the baking dish make sure there is ample room between each roll. You do not want to overcrowd the pan as it will slow the rate of baking in the center.
When the rolls are fully proofed and ready to bake they should just touch each other.
I leave ample space between rolls
They should just touch when ready to bake
These are from the center of the pan, baked, light and fluffy