Preheat the oven to 350°F. Grease a 8x8 inch baking dish with non-stick cooking spray and set it aside.

Prepare the Streusel Topping:

- In a small bowl, mix together flour, brown sugar, granulated sugar, cinnamon, and salt.

- Gently pinch the butter into the mixture with your fingers until small clumps, no larger than the size of a pea, are formed. The texture should resemble coarse wet sand with clumps.

Prepare the French Toast:

- In a large bowl, whisk eggs, heavy whipping cream, flour, cinnamon, nutmeg, and vanilla extract.

- Slice each cinnamon roll from the can into eighths and arrange them in the prepared baking dish.

- Pour the egg mixture generously over the cinnamon roll pieces, ensuring each piece is well-coated.

- Sprinkle the streusel over the top.

- Bake uncovered for 20-35 minutes or until the top is lightly browned.

- Drizzle the cinnamon roll icing over the French toast bake and savor the deliciousness!