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1
Heat oven to 350u00b0F Grease a 13x9-inch baking pan.
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2
Line bottom with waxed paper; grease and flour paper.
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3
Whisk together flour, sugar, baking soda, baking powder and salt in large bowl.
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4
Whisk cocoa and boiling water in medium bowl until smooth.
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5
Stir cocoa into dry ingredients with a rubber spatula.
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6
(Mixture will be dry.) Whisk eggs, buttermilk, vanilla and butter in medium bowl.
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7
Whisk buttermilk mixture into cocoa mixture, until smooth.
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8
Pour batter into prepared pan.
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9
Bake 40 minutes, until a toothpick inserted into center of cake comes out clean.
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10
Make frosting:
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11
Meanwhile, place Ibarra chocolate (or semisweet chocolate and cinnamon) and butter in medium microwaveproof bowl.
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12
Cover bowl with plastic wrap, turning back one section to vent.
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13
Microwave on High 1 1/2 minutes, until chocolate is melted; stir until smooth.
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14
Add cream.
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Cover and microwave 1 1/2 minutes more, just until cream is hot.
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Stir until frosting is completely smooth and shiny.
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17
Cool cake in pan on wire rack 5 minutes.
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18
Pour frosting evenly over hot cake.
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19
Sprinkle pecans over top.
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20
Cool cake completely.
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21
Serve immediately. Good with vanilla ice cream, if desired. Refrigerate any leftovers.