Start by heat-treating your flour to make it safe for raw consumption. Spread the flour on a baking sheet and bake at 350°F (175°C) for about 5 minutes. Let it cool before using.
In a large mixing bowl, combine the cubed unsalted butter, brown sugar, and granulated sugar. Using a spatula or an electric mixer, cream these ingredients together until the mixture is light and fluffy.
Next, mix in the peanut butter, milk, and vanilla extract until well combined. The mixture should be smooth and creamy.
Gradually add the heat-treated flour and salt to the wet mixture. Stir until just combined, being careful not to overmix.
Finally, fold in the mini chocolate chips. This is where the fun begins—every bite will be bursting with chocolatey goodness!
Scoop the cookie dough into a bowl or individual serving cups. You can enjoy it right away or store it in an airtight container in the fridge for later.