My best friend couldn’t believe how easy this was. Only 3 ingredients for the most flavorful potatoes ever.

These slow cooker 3-ingredient onion butter potatoes are the kind of recipe that makes folks shake their heads and say, “Now that just isn’t fair—it’s too easy to taste this good.” It reminds me of the church potlucks back in our small Midwestern town, where someone would always show up with a crock of buttery potatoes that disappeared before the main dishes.

This version leans on a simple pantry trick many farm wives have used for decades: dry onion soup mix. Combined with real butter and good red potatoes, it turns into a rich, glossy, caramelized coating that makes the potatoes taste like they cooked all afternoon in a cast-iron skillet, even though the slow cooker does all the work for you.