The Cake Slice: Butterscotch Cream Roll -Up

This wonderful and fantastic cake is was the month's cake for The Cake Slice ... now I'm really ashamed of my delay but the worst part is that I baked it in time as I had done for the previous cake and not posted it.  
I'm so very lucky that in this group they are so nice to put up with me: Thank you !!

Making this cake looks harder than it is, just follow the directions and you are done.
The recipe is the one before the last we bake from Julie Richardson's Vintage Cakes.

Butterscotch Cream Roll-Up

Ingredients

Butterscotch Sauce ~

• ⅓ cup (3 ounces) unsalted butter
• 1 cup (7½ ounces) firmly packed dark brown sugar
• 1 cup heavy cream
• 1 tablespoon whisky (optional)
• 1½ teaspoons pure vanilla extract
• ½ teaspoon fine sea salt

Cake ~

• 1 cup (4 ounces) sifted cake flour
• 1 cup (7 ounces) sugar
• 1 teaspoon baking powder
• ½ teaspoon fine sea salt
• ½ cup canola oil
• 4 egg yolks, at room temperature
• ¼ cup water
• 1 teaspoons pure vanilla extract
• 6 egg whites, at room temperature
• ¼ teaspoon cream of tartar

Filling ~

• 1½ cups heavy cream, cold
• ½ cup (2 ounces) natural sliced almonds, toasted

Preparation

Butterscotch Sauce ~

1. Melt the butter over medium heat in a large heavy-bottomed saucepan. 
2. Add the brown sugar all at once and stir with a wooden spoon to combine; cook, stirring frequently, until the mixture begins to simmer and changes from a wet sand consistency to a liquid that gives off a lovely molasses smell and looks like taffy, approximately 3 minutes from the time it comes to a simmer.
3. Drizzle ¼ cup of the cream into the mixture and vigorously blend the cream into the sugar and whisk in the remaining cream.
4. Turn the heat up to medium-high and allow the sauce to boil, whisking occasionally, until it has darkened, about 8 minutes.
5. Remove the pot from the heat and allow the sauce to cool for a few minutes before adding the whisky, vanilla, and salt.
6. Refrigerate until cold.

Cake ~

1. Center an oven rack and preheat the oven to 325℉.
2. Sift together the flour, baking powder, salt, and ¾ cup of the sugar in a large bowl, then whisk the ingredients by hand.
3. In a small bowl, whisk together the oil, yolks, water, and vanilla.
4. Add the liquid mixture to the dry ingredients and briskly stir with a rubber spatula until just smooth.
5. In the clean bowl of a stand mixer fitted with the clean whisk attachment, whip the egg whites on medium speed until frothy.
6. Add the cream of tartar and gradually increase the speed to high, whipping until the whites just form a soft peak.
7. With the mixer on medium speed, gradually add the remaining ¼ cup of sugar in a slow stream.
8. Return the mixer to high and continue whipping until the whites just begin to hold firm, shiny peaks.
9. With a rubber spatula, fold a third of the whites into the batter, using as few strokes as possible. Add the remaining whites, folding until incorporated.
10. Pour the batter into the prepared pan and smooth the top (this is best done with an offset spatula).
11. Place the pan in the oven and bake the cake until it springs back when lightly touched and is barely golden in color, 16 to 20 minutes.
12. Cool the cake on a wire rack until it reaches room temperature.

Filling ~

1. Place the bowl of a stand mixer and its whisk attachment in the freezer for 5 minutes.
2. Fit the cold bowl and whisk to the mixer and whip the 1½ cups of cold heavy cream and 1 cup of the cold butterscotch sauce together on medium-low speed until the ingredients are blended.
3. Gradually turn the mixer up to high speed and whip just until the cream holds soft peaks but is not yet stiff.

Assembly ~

1. Keep the cake in its pan and orient the pan so the longer side is closest to you.
2. Cut the cake with a serrated knife into four equal pieces measuring 4 by 12 inches.
3. Cut through the underlying parchment paper with a pair of scissors in the same places that you cut the cake so you have four quarters of cake (with parchment paper) that can each move independently.
4. Leaving the cake in the pan, spread a bit more than half of the butterscotch cream evenly over the cake and sprinkle with the toasted almonds.
5. Refrigerate the remainder of the cream while you roll up the cake.
6. With the pan still oriented with the longer side closest to you, lift up the nearest edge—both cake and paper—of one of your 4 strips. Using the parchment paper as the cake’s support, begin to tuck the cake into a roll and continue tucking (and peeling away the parchment paper) while gently rolling the cake away from you into a roll.
7. Place the rolled cake upright on a serving plate, so that the spiral of cake and filling is visible at the top. (Don’t worry, it gets easier from here.)
8. Lift up the next cake strip, using the parchment paper to support it, and wrap the strip around the roll on the serving plate, beginning where the outside edge of the first cake left off, in order to create a bigger roll.
9. Continue with the next two strips, beginning the wrap where the last left off, to make one enormous rolled up cake.
10. Finish by frosting the sides with the remainder of the cream (you might need to give the cream a few turns with a hand whisk to stiffen it up), leaving the top free to show off the spiral of cake and cream. Refrigerate the cake for at least 1 hour and up to 1 day, lightly wrapped in plastic.
11. Just before serving, warm the remaining butterscotch sauce and drizzle it over the individual servings. Well wrapped and refrigerated, this cake keeps for up to 3 days.

Cake from Vintage Cakes by Julie Richardson.