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1
To make the cake base: Preheat the oven to 350 degrees F.
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2
Grease a 9 by 9-inch cake pan.
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3
Combine all ingredients in a mixing bowl and scrape into the prepared pan.
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4
Bake until a cake tester or a toothpick inserted into the center comes out clean, about 30 minutes.
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5
Place on a rack to cool for 15 minutes.
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6
Turn the cake out of the pan and let cool completely.
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7
To make the towers: Generously grease the cans with shortening.
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8
Combine all ingredients in a mixing bowl.
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9
Divide the batter among the cans, filling them not more than halfway.
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10
Bake until a cake tester, wooden skewer or raw piece of spaghetti inserted into the center comes out clean, about 50 minutes for the smaller cans and 1 1/4 hours for the large can.
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11
Place on a rack to cool for 15 minutes.
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12
Turn the cakes out of the cans and let cool completely.
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13
To prepare the frosting: Put 2 tubs of frosting in a mixing bowl and add blue food coloring until it reaches the desired shade.
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14
Set aside.
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15
Divide the remaining tub of frosting between 2 bowls and color 1 purple and 1 pink.
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16
Set aside.
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17
To assemble the cake: Place the square cake on a platter and cover with blue frosting.
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18
Use a serrated knife to trim the tower cakes so the tops are flat.
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19
Cover the towers with blue frosting.
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20
Set the large tower on the center of the base cake and then set 1 of the smaller towers on top of it, securing with 1 or 2 straws or skewers.
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21
Set 1 small tower on each side of the large one, securing them to the base cake with a straw or skewer (cut to fit as needed).
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22
Cover the sugar cones with purple icing and place open-side down on top of each tower.
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23
Use a spatula to smooth out the frosting on the cakes or cones.
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24
Fill the pastry bag with pink icing and pipe a border around the edges of the cake.
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25
Insert lollipops around the edge of the base cake to make a fence.
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26
Set the doll in front of the main tower and scatter the sprinkles over all.
