Step 1

Preheat the oven to 350˚. Generously butter a 9-by-13-inch baking dish. Cut each round of cinnamon roll dough into 4 pieces. Reserve the frosting packets.

Step 2

Whisk together the eggs, half-and-half, cinnamon and salt in a large bowl. Add the cinnamon roll dough and toss lightly to coat. Pour into the baking dish.

Step 3

Mix the brown sugar and pecans in a small bowl. Sprinkle on top of the casserole and bake until puffed, golden brown and cooked through, about 35 minutes.

Step 4

Meanwhile, whisk together the contents of the frosting packets and the sour cream in a medium bowl until smooth. Let the casserole cool for 10 minutes, then drizzle with the frosting.