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1
Preheat oven to 350.
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2
To prepare cake, coat two.
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3
9-inch cake pans with cooking spray.
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4
Line bottom of pans with parchment paper.
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5
Lightly spoon flour into dry measuring cups; level with a knife.
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6
Combine flour, baking powder, salt, and nuts.
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7
Combine granulated sugar and 10 tablespoons butter in a bowl; beat with a mixer at high speed until light and fluffy.
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8
Add eggs, 1 at a time, beating well after each addition.
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9
Beat in vanilla.
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10
Reduce mixer speed to low.
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11
Add flour mixture alternately with buttermilk, beginning and ending with flour mixture, beating just until combined.
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12
Spoon batter into prepared pans;
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13
Bake at 350 for 25 minutes or until a wooden pick inserted in center comes out clean.
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14
Cool in pans 5 minutes.
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15
Invert onto racks; cool completely.
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16
To prepare frosting, combine 1/4 cup butter, brown sugar, and half-and-half in a heavy saucepan; bring to a boil.
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17
Cook 3 minutes without stirring.
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18
Combine butter mixture, powdered sugar, and maple syrup in a mixing bowl; beat with a mixer at high speed for 2 minutes.
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19
Spread 1/2 cup frosting over 1 cake layer; top with remaining cake layer.
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20
Drizzle with remaining frosting.
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21
Let cake stand until frosting is set.
