Slow Cooker Potato, Leek, and Kale Gratin With Too Much Cheese

Layers of creamy potato, three cheeses, and savory kale and leeks mean that this is one dish that's here for a good time, not a long time.
Layers of creamy potato, salty cheese, and savory kale and leeks mean that this is one dish that's here for a good time, not a long time.

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Slow Cooker Potato, Leek, and Kale Gratin With Too Much Cheese