I can't believe I found this old recipe. I made it for years and somehow lost the recipe during many moves between Arizona and Colorado. Thank you so much cyberchef and BakeSpace.com for posting so I could grab it!
1/2 pound Velveeta cheese
2 pounds powdered sugar
3/4 cup butter
1 tablespoon vanilla
1 cup peanut butter, smooth
Melt cheese, sugar, and butter together in large saucepan over medium heat.
Add remaining ingredients to saucepan and remove from heat.
Stir until all ingredients are incorporated.
Put onto a silpat or rolling mat. Knead until you can no longer see the sugar. Spread into greased pan using a spatula to spread evenly.
Refrigerate until set. Cut into squares.