Bûche De Noël

Serves: 5

Roxane Raynor

1 January 1970

Based on User reviews:

49

Spice

44

Sweetness

51

Sourness

38

mins

Prep time (avg)

5.2

Difficulty

Ingredients:

6 large

Egg White

3 cup

Sugar

1 tsp

Kosher Salt

3 tbsps

Cornstarch

1 cup

Whole Milk

1 tbsp

Vegetable Oil

Directions:

1

Mushrooms and buttercream: Preheat oven to 225°F

2

Whisk egg whites, sugar, cream of tartar, and salt in a large heatproof bowl set over a medium saucepan of simmering water (bowl should not touch water) until egg whites are very liquid (mixture will be warm to the touch) and sugar is dissolved (rub between your fingers to check), about 5 minutes

3

Remove bowl from heat and beat with an electric mixer until stiff, glossy peaks form (bowl will feel cool), about 5 minutes

4

Line a rimmed baking sheet with parchment paper and dust very lightly with cocoa powder

5

Scoop out 1 cup meringue

6

Dollop heaping teaspoonfuls of meringue onto prepared baking sheet, spacing at least 1 1/2" apart

7

Lightly dust meringue with more cocoa powder and place a sheet of parchment over top

8

Use an offset spatula or your hands to flatten meringue into irregularly shaped disks about 1/8" thick

9

Bake until lightly browned and parchment peels away easily, 75–90 minutes (meringue will be soft when it first comes out of the oven but will dry and crisp as it cools)

10

Meanwhile, with mixer on medium speed, beat butter into remaining meringue, adding a piece at a time and waiting until incorporated before adding more

11

Beat until mixture is very smooth

12

(If it looks very loose or curdled, just keep beating; buttercream will come back together

13

) Add vanilla extract and scrape in vanilla seeds; beat to combine

14

Preheat oven to 225°F

15

Whisk egg whites, sugar, cream of tartar, and salt in a large heatproof bowl set over a medium saucepan of simmering water (bowl should not touch water) until egg whites are very liquid (mixture will be warm to the touch) and sugar is dissolved (rub between your fingers to check), about 5 minutes

16

Remove bowl from heat and beat with an electric mixer until stiff, glossy peaks form (bowl will feel cool), about 5 minutes

17

Line a rimmed baking sheet with parchment paper and dust very lightly with cocoa powder

18

Scoop out 1 cup meringue

19

Dollop heaping teaspoonfuls of meringue onto prepared baking sheet, spacing at least 1 1/2" apart

20

Lightly dust meringue with more cocoa powder and place a sheet of parchment over top

21

Use an offset spatula or your hands to flatten meringue into irregularly shaped disks about 1/8" thick

22

Bake until lightly browned and parchment peels away easily, 75–90 minutes (meringue will be soft when it first comes out of the oven but will dry and crisp as it cools)

23

Meanwhile, with mixer on medium speed, beat butter into remaining meringue, adding a piece at a time and waiting until incorporated before adding more

24

Beat until mixture is very smooth

25

(If it looks very loose or curdled, just keep beating; buttercream will come back together

26

) Add vanilla extract and scrape in vanilla seeds; beat to combine

27

Do Ahead Mushrooms and buttercream can be made 2 days ahead

28

Store mushrooms airtight at room temperature

29

Cover and chill buttercream; bring to room temperature, then beat until smooth before using

30

Mushrooms and buttercream can be made 2 days ahead

31

Store mushrooms airtight at room temperature

32

Cover and chill buttercream; bring to room temperature, then beat until smooth before using

33

Sponge Cake: Increase oven to 400°F

34

Coat a 26x18" rimmed baking sheet with nonstick spray and line with parchment paper, leaving overhang on long sides

35

Spray parchment

36

Whisk flour, cornstarch, and ⅓ cup cocoa powder in a small bowl

37

Bring milk, butter, oil, vanilla, and salt to a simmer in a small saucepan over medium-low heat

38

Keep warm over low heat

39

Meanwhile, beat eggs and egg yolks with an electric mixer on medium speed until smooth

40

Increase speed to high; beat until doubled in volume

41

With motor running, gradually add sugar; beat until very light and fluffy and mixture falls back on itself in a slowly dissolving ribbon (it should be at least quadrupled in volume), about 5 minutes

42

Reduce speed to medium and gradually stream in milk mixture

43

Sift one-third of dry ingredients over top; gently fold in until only a few streaks remain

44

Working in 2 additions, repeat with remaining dry ingredients, scraping bottom of bowl and using as few strokes as possible to keep eggs from deflating (a few streaks are fine)

45

Scrape batter into prepared baking sheet and gently spread to edges of pan

46

Tap sheet lightly on counter to pop any large air bubbles

47

Bake cake until surface is puffed and springy to the touch, 10–12 minutes

48

Let cake cool in pan 2 minutes, then run a knife along short edges to loosen

49

Invert onto a wire rack and carefully peel away parchment

50

Using a fine-mesh sieve, dust cake with cocoa powder

51

Cover with a large kitchen towel

52

Place another wire rack on top and flip cake over so towel side is underneath

53

Remove top rack; dust exposed side with cocoa powder

54

Starting at one of the long sides, gently roll up warm cake inside towel

55

Let cake cool, seam side down, 30–35 minutes

56

Increase oven to 400°F

57

Coat a 26x18" rimmed baking sheet with nonstick spray and line with parchment paper, leaving overhang on long sides

58

Spray parchment

59

Whisk flour, cornstarch, and ⅓ cup cocoa powder in a small bowl

60

Bring milk, butter, oil, vanilla, and salt to a simmer in a small saucepan over medium-low heat

61

Keep warm over low heat

62

Meanwhile, beat eggs and egg yolks with an electric mixer on medium speed until smooth

63

Increase speed to high; beat until doubled in volume

64

With motor running, gradually add sugar; beat until very light and fluffy and mixture falls back on itself in a slowly dissolving ribbon (it should be at least quadrupled in volume), about 5 minutes

65

Reduce speed to medium and gradually stream in milk mixture

66

Sift one-third of dry ingredients over top; gently fold in until only a few streaks remain

67

Working in 2 additions, repeat with remaining dry ingredients, scraping bottom of bowl and using as few strokes as possible to keep eggs from deflating (a few streaks are fine)

68

Scrape batter into prepared baking sheet and gently spread to edges of pan

69

Tap sheet lightly on counter to pop any large air bubbles

70

Bake cake until surface is puffed and springy to the touch, 10–12 minutes

71

Let cake cool in pan 2 minutes, then run a knife along short edges to loosen

72

Invert onto a wire rack and carefully peel away parchment

73

Using a fine-mesh sieve, dust cake with cocoa powder

74

Cover with a large kitchen towel

75

Place another wire rack on top and flip cake over so towel side is underneath

76

Remove top rack; dust exposed side with cocoa powder

77

Starting at one of the long sides, gently roll up warm cake inside towel

78

Let cake cool, seam side down, 30–35 minutes

79

Do Ahead Cake can be baked 1 day ahead

80

Store tightly wrapped in plastic at room temperature

81

Cake can be baked 1 day ahead

82

Store tightly wrapped in plastic at room temperature

83

Assembly: Carefully unroll towel and cake on a flat surface (cake will curl at the ends and may have a few small cracks but should stay in 1 piece)

84

Position cake so the end that was in innermost part of spiral is closest to you; brush off any excess cocoa

85

Using a pastry brush, gently dab cocoa syrup over entire surface of cake; you may not use it all

86

Dollop bittersweet ganache over top and smooth with an offset spatula to create an even layer

87

Dollop mascarpone filling over ganache; carefully spread over surface, trying not to blend with ganache and avoiding last inch of cake along long side farthest from you

88

Using towel to lift edge nearest you, reroll cake, keeping towel on exterior

89

Chill, seam side down, until filling is set, about 30 minutes

90

Transfer filled cake to a baking sheet

91

Set aside 1/2 cup buttercream for attaching branches

92

Evenly spread remaining buttercream over cake with an offset spatula

93

Using a long serrated knife, trim 1/2" of cake from each end to create clean edges; discard (or eat!)

94

Slice off a 4" piece of cake

95

Starting 1" from end, divide 4" piece in half, cutting at a 45° angle, leaving 1" at opposite end

96

Transfer log to a platter

97

Place angled side of each small piece of cake against roll to create branches, positioning one on top and the other on the side using a large dab of buttercream to secure

98

Cover any exposed cake on sides with more buttercream but leave cut ends exposed

99

Use spatula to create textured lines in buttercream to look like birch bark

100

Knead together marzipan and cocoa powder on a surface until smooth

101

Roll out on a sheet of parchment paper to less than 1/8" thick, then cut out wavy strips to look like tree knots; drape over buttercream and press gently to adhere

102

Using either a pastry bag fitted with a very small round tip or a disposable plastic bag with one corner snipped off, drizzle melted chocolate over log to mimic birch bark striations

103

Chill Bûche de Noël, uncovered, until ready to serve

104

Just before serving, press mushrooms perpendicularly into log in groups of 2 or 3

105

Carefully unroll towel and cake on a flat surface (cake will curl at the ends and may have a few small cracks but should stay in 1 piece)

106

Position cake so the end that was in innermost part of spiral is closest to you; brush off any excess cocoa

107

Using a pastry brush, gently dab cocoa syrup over entire surface of cake; you may not use it all

108

Dollop bittersweet ganache over top and smooth with an offset spatula to create an even layer

109

Dollop mascarpone filling over ganache; carefully spread over surface, trying not to blend with ganache and avoiding last inch of cake along long side farthest from you

110

Using towel to lift edge nearest you, reroll cake, keeping towel on exterior

111

Chill, seam side down, until filling is set, about 30 minutes

112

Transfer filled cake to a baking sheet

113

Set aside 1/2 cup buttercream for attaching branches

114

Evenly spread remaining buttercream over cake with an offset spatula

115

Using a long serrated knife, trim 1/2" of cake from each end to create clean edges; discard (or eat!)

116

Slice off a 4" piece of cake

117

Starting 1" from end, divide 4" piece in half, cutting at a 45° angle, leaving 1" at opposite end

118

Transfer log to a platter

119

Place angled side of each small piece of cake against roll to create branches, positioning one on top and the other on the side using a large dab of buttercream to secure

120

Cover any exposed cake on sides with more buttercream but leave cut ends exposed

121

Use spatula to create textured lines in buttercream to look like birch bark

122

Knead together marzipan and cocoa powder on a surface until smooth

123

Roll out on a sheet of parchment paper to less than 1/8" thick, then cut out wavy strips to look like tree knots; drape over buttercream and press gently to adhere

124

Using either a pastry bag fitted with a very small round tip or a disposable plastic bag with one corner snipped off, drizzle melted chocolate over log to mimic birch bark striations

125

Chill Bûche de Noël, uncovered, until ready to serve

126

Just before serving, press mushrooms perpendicularly into log in groups of 2 or 3

127

Do Ahead Bûche de Noël (without meringue mushrooms) can be assembled 1 day ahead

128

Wrap in plastic and chill

129

Attach mushrooms just before serving

130

Bûche de Noël (without meringue mushrooms) can be assembled 1 day ahead

131

Wrap in plastic and chill

132

Attach mushrooms just before serving