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1
Make the Crust: In large bowl using a hand-held mixer or stand mixer fitted with a paddle attachment, cream softened butter for about 1 minute on medium speed.
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2
Add sugar, then beat on medium speed until fluffy and light in color.
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3
Beat in egg and vanilla.
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4
Scrape down the sides as needed.
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5
In a medium bowl, whisk together flour, salt, baking powder, and baking soda.
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6
With the mixer running on low speed, slowly add dry ingredients to wet ingredients.
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7
Once completely combined, cover dough tightly and chill in the refrigerator for 30 minutes and up to 1 day.
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8
Without chilling, cookie dough will spread over sides of pan.
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9
Preheat oven to 350F (177C).
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10
Generously grease a12-inch pizza pan.
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11
Remove chilled cookie dough from refrigerator and press onto pan to form a flat circle.
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12
Leave a 2-inch space from the edge.
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13
Bake for 18-20 minutes or until edges are very lightly browned.
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14
Allow crust to cool completely before decorating.
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15
As you make frosting, soak apple slices in club soda to help prevent browning.
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16
Make frosting: In medium bowl using a handheld or stand mixer fitted with a paddle or whisk attachment, beat cream cheese and butter together on medium speed until smooth, about 2 minutes.
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17
Add confectioners sugar, vanilla, and 1/4 cup caramel sauce.
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18
Beat for 2 minutes until completely combined.
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19
Spread over cooled crust.
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20
Decorate with apple slices, caramel sauce, and walnuts.
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21
Cut into slices and serve.
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22
Leftovers keep well in the refrigerator for up to 3 days.
