0 Preheat your oven to 350°
2 Grease a 10”x15” jelly roll pan or rimmed baking sheet with butter or your favorite non-stick spray and line the base with parchment paper
Make the sponge…
3 Sift 1/2 cup of all purpose flour, 1/4 cup of natural unsweetened cocoa powder, 1/2 teaspoon of baking powder and a pinch of salt into a bowl, discard any hard bits and set aside for now
4 Combine 4 large eggs and 2/3 cup of granulated sugar in a large bowl and beat with an electric hand mixer until thick, frothy and a pale yellow color
5 Add a teaspoon of pure vanilla extract and 3 tablespoons of olive oil and beat until completely incorporated
6 Add the sifted dry ingredients and gently fold into the whipped egg mixture until fully combined
7 Spread the batter evenly over the greased and lined pan
8 Bake in a 350° oven for 10 minutes
9 While the sponge is baking, lay a thin kitchen towel on your counter and dust generously with confectioners sugar
10 When the cake is baked, carefully invert it onto the towel and discard the parchment paper
11 Roll the sponge up tightly in the towel starting at the short end and place onto a cooling rack until it cools to room temperature
Make the whipped chocolate ganache filling…
13 Warm 3/4 cup of heavy cream until steaming either over medium heat or in the microwave
14 Place 8 ounces of roughly chopped chocolate in a large bowl and pour the hot heavy cream over
15 Leave undisturbed for 5 minutes
16 Stir the chocolate and cream until smooth and shiny
17 Set the mixture aside to cool for about 30 minutes (stir the mixture every 10 minutes to keep it smooth)
18 After the mixture has cooled, whip with an electric hand mixer until thick and fluffy
19 Optionally, add 1/2 cup of confectioners sugar if a sweeter filling is desired
Assemble the swiss roll…
21 Once the sponge is fully cooled, carefully unroll it and transfer it from the towel onto a sheet of plastic wrap
22 Spread the chocolate cream filling evenly over the sponge leaving a small boarder around the edges
23 Re-roll the sponge and wrap tightly in plastic wrap
24 Chill until fully chilled and set
Garnish and serve…
26 Once the roll is fully set, unwrap and discard the plastic wrap
27 Garnish with a dusting of confectioners sugar and/or cocoa powder, slice into 1 inch slices and enjoy!
