No-bake chocolate oatmeal cookies — also called Preacher Cookies or Cow Patties depending on where you grew up — have been a staple of American home kitchens since at least the mid-20th century. The technique is stovetop candy-making at its simplest: boil butter, sugar, cocoa, and milk together for exactly one minute, pull it off the heat, and stir in peanut butter, vanilla, and oatmeal before dropping onto waxed paper to set. Timing is everything — a full minute of boiling ensures the cookies set firm; under-boil them and they stay sticky, over-boil and they crumble. Mary April’s version is the classic, and it disappears fast.
Ingredients
1 stick (½ c) margarine
2 c sugar
3 Tbsp cocoa
½ c milk
1 tsp vanilla
½ c peanut butter
3 c oatmeal (quick-cooking)
Instructions
In a medium saucepan, combine the margarine, sugar, cocoa, and milk.
Bring to a boil over medium heat, stirring constantly. Once boiling, boil for exactly 1 minute while continuing to stir.
Remove from heat immediately.
Stir in the vanilla and peanut butter until fully combined.
Add the oatmeal and mix thoroughly until everything is evenly coated.
Working quickly, drop by teaspoonfuls onto waxed paper.
Let cool completely at room temperature until firm, about 30 minutes.
Store in an airtight container at room temperature.
The 1-minute boil is critical: Too little boiling and the cookies won’t set — they’ll stay sticky. Too much and they’ll be dry and crumbly. Start timing once the mixture reaches a full rolling boil.
Work fast: Once you add the oatmeal the mixture sets quickly. Have your waxed paper ready before you start.
