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1
Cake.
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2
Preheat the oven to 350oF.
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3
Grease two round 9-inch cake pans with solid shortening and dust with flour.
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4
Shake out the excess flour and set pans aside.
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5
Place the cake mix, milk, melted butter, eggs, vanilla, and cinnamon in a large mixing bowl.
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6
Blend with an electric mixer on low speed for 1 minute.
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7
Stop the machine and scrape down the sides of the bowl with a rubber spatula.
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8
Increase the mixer speed to medium and beat 2 minutes more, scraping the sides down again if needed.
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9
The batter should look well combined.
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10
Divide the batter between the prepared pans, smoothing it out with the rubber spatula.
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11
Bake the cakes until they are golden brown and spring back when lightly pressed with your finger (27 to 29 minutes).
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12
Allow them to cool completely (at least 30 minutes).
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13
Frosting.
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14
Place the butter in a large mixing bowl.
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15
Blend with an electric mixer on low speed until fluffy, 30 seconds.
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16
Stop the machine and add the confectioner's sugar, 3 tbsp of milk, and vanilla.
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17
Add cinnamon; blend with the mixer on low speed until the sugar is incorporated (approximately 1 minute).
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18
Increase the speed to medium and beat until light and fluffy (at least 1 minute).
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19
Blend in up to 1 tbsp of milk if the frosting seems too stiff.
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20
To Frost Cake.
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21
Place one cake layer, right side up, on a serving platter.
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22
Spread the top with frosting.
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23
Place the second layer, right side up, on top of the first layer and frost the top and sides of the cake with clean, smooth strokes.
