Preheat the oven to 350. Cut each pillsbury grands into 8 pieces. Combine the cinnamon and sugar in a bowl and toss all the biscuit pieces in the mixture.
Combine the butter, brown sugar, and salt in a bowl. Heat in the microwave until the butter is melted. Spoon a small amount into 6 cavities of a muffin tin.
Pile the dough into the 6 cavities of the muffin tin. There should be about 10 pieces in each.
Top with any remaining butter + brown sugar mixture and bake at 350 for 20-30 minutes, until the tops are crispy and the middle isn’t doughy! Enjoy!