Preheat the oven to 375 degrees.
Grease a 12 cup muffin tin with baking or cooking spray. Be sure to coat all parts of each muffin tin.
Cut each cinnamon roll into 6 equal pieces and place them in a separate bowl. (NOTE: this can vary if you are not using Pillsbury 8-pack Cinnamon Rolls)
Place 4 cinnamon roll pieces evenly in the bottom of each muffin tin (see photo above).
Evenly spread the filling over the cinnamon roll pieces (it'll end up being about 1 heaping tablespoon of filling per muffin tin). See the photo above.
Place 4 more cinnamon roll pieces evenly over the top of the filling and lightly press down.
Bake for 12-15 minutes or until the tops have begun to brown. NOTE: some of the filling may leak out of the tops of the muffins and that's okay. Just press the tops down again lightly after taking them out of the oven.
Scoop the icing that came with the cinnamon rolls into one bowl and microwave it for a few seconds (until it becomes thinner).
Use a spoon to drizzle the icing over the tops of the muffins.
Allow them to cool for 10-15 minutes, then remove them from the pan. These are best enjoyed warm!