Preheat your oven to 350°F (175°C). This ensures that your cookie pizza bakes evenly and achieves that perfect chewy texture.
Line a baking sheet with parchment paper. This will prevent your cookie pizza from sticking and make it easy to transfer once baked.
In a large mixing bowl, combine 1/2 cup of peanut butter spread with salted caramel, 1/2 cup of packed light brown sugar, and 1/4 cup of granulated sugar. Mix until well combined. Next, add in 1/2 teaspoon of vanilla extract and 2 egg whites. Whisk until the mixture is smooth and creamy.
In a separate bowl, whisk together 1/2 cup + 2 tablespoons of gluten-free oat flour, 1/2 teaspoon of baking powder, 1/4 teaspoon of salt, and 1/4 cup of cocoa powder. Gradually add the dry ingredients to the wet mixture, stirring until just combined. Finally, fold in 1/4 cup of mini chocolate chips.
Spoon the cookie dough onto the prepared baking sheet and spread it into a circular shape, approximately 10 inches in diameter. Bake in the preheated oven for 12-15 minutes, or until the edges are set but the center is still slightly soft. Allow it to cool completely on the baking sheet.
While the cookie pizza is cooling, prepare the frosting. In a bowl, mix together 1/4 cup of non-fat vanilla Greek yogurt, 3 tablespoons of peanut butter spread with salted caramel, and 2 teaspoons of honey. Whisk until smooth and creamy.
Once the cookie base is completely cool, spread the frosting evenly over the top using a spatula. Sprinkle additional mini chocolate chips over the frosting for an extra touch of sweetness and visual appeal.
Using a sharp knife or pizza cutter, slice your cookie pizza into wedges. Serve immediately or store in the refrigerator for later enjoyment!