In a large bowl using an electric mixer with a paddle attachment, beat butter until creamy.

Add powdered sugar, heavy cream, and peppermint extract. Beat until creamy and smooth.

Lightly dust work surface with powdered sugar; turn out mint dough mixture and knead until silky and smooth.

Divide mint dough mixture into thirds, one for each color. Add and mix desired colors. Cover each portion with plastic wrap or seal in a plastic sandwich bag to keep it from drying out.

Line 2 baking sheets with nonstick foil and then lightly dust with powdered sugar. Set aside.

Working with one color at a time, roll out ¼ cupfuls of the mint dough mixture into ½" thick rope using your fingers.

Using a bench scraper or knife, cut rope into ½" - ¾" pillows. Transfer mints to prepared baking sheets. Be careful not to squish mints as they will be soft and squish easily.

Repeat steps 6-7 with remaining mint dough mixture.

Allow Butter Mint Pillows to air-dry at room temperature for 1-2 days until firm enough to handle. Eat & Enjoy!