3 cups (300 grams) quick-cooking oats
1 tsp. vanilla extract
1/2 cup (125 grams) creamy peanut butter
1/4 cup (20 grams) unsweetened cocoa powder
1/2 cup (120ml) milk
2 cups (400 grams) granulated sugar
1/2 cup (115 grams) butter, cut into pieces