Step 1: Thaw the Dough - Begin by placing the frozen bread dough in a large bowl. Cover it with plastic wrap and let it thaw at room temperature for about 4-6 hours, or overnight in the refrigerator.
Step 2: Prepare the Filling - In a separate bowl, mix together the softened butter, white sugar, and cinnamon until well combined.
Step 3: Roll Out the Dough - Once the dough is ready, turn it out onto a floured surface. Using a rolling pin, roll it out into a rectangle approximately ¼ inch thick.
Step 4: Spread the Filling - Evenly spread the cinnamon filling over the rolled-out dough, leaving a small border around the edges.
Step 5: Roll It Up - Starting at one of the long edges, carefully roll the dough tightly into a log.
Step 6: Slice the Rolls - Using a sharp knife or a piece of dental floss, slice the log into 12 equal pieces. Place the rolls cut-side up in a greased baking pan.
Step 7: Second Rise - Cover the pan with plastic wrap and let the rolls rise in a warm place for about 30-45 minutes, or until they double in size.
Step 8: Bake the Rolls - Preheat your oven to 350°F (175°C). Once the rolls have risen, pour the heavy cream evenly over the top of the rolls. Bake for 25-30 minutes or until golden brown.
Step 9: Prepare the Frosting - While the rolls are baking, prepare the frosting by beating together the softened butter, powdered sugar, vanilla extract, salt, and heavy cream until smooth.
Step 10: Frost and Serve - Once the cinnamon rolls are done baking, let them cool slightly before drizzling the frosting over the top. Serve warm.