The list is refreshingly short:
Slow cooker / crockpot -a 4-quart or larger model works perfectly for this volume
Knife and cutting board - for finely chopping the carrots, mushrooms, and onions
Measuring cups and spoons
Wooden spoon or spatula - for stirring before the lid goes on
Food processor (optional- speeds up the vegetable chopping dramatically if you own one
That's genuinely it. No browning, no sautéing, no pre-cooking required everything goes straight into the slow cooker raw and transforms over three hours into something that tastes like it took considerably more effort. This is one of those rare recipes where the simplicity of the method and the quality of the result feel completely disconnected from each other in the best possible way.