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Dinner · Part 2 of 3: Instructions

Four-Ingredient Pesto Parmesan Crockpot Potatoes Step-by-step instructions

A 6-quart olive-green ceramic slow cooker with the lid slightly ajar
Prep
Cook
Total
Serves
6

Before you start

Before starting, ensure your slow cooker is clean and dry. Wash the potatoes thoroughly under cold running water to remove any field dirt. Have your pesto, butter, and cheese measured and ready to go.

The prep time is minimal, but having your ingredients prepped on the counter will allow you to assemble the dish in under two minutes, leaving you free to focus on other parts of your meal. Ensure you have a warm platter prepared for serving, as the potatoes will retain heat better on a pre-warmed surface.

Ingredients at a glance (6)
  • 3 lb baby red potatoes, halved
  • 1/2 cup basil pesto
  • 4 tbsp unsalted butter, cubed
  • 1/2 cup grated Parmigiano-Reggiano
  • 1/4 cup toasted pine nuts, for serving
  • 1/4 cup shaved parmesan curls, for serving

Instructions

Assembly Phase

  1. Prepare the Potatoes
    Wash the baby red potatoes thoroughly under cold running water. Pat them dry with a clean kitchen towel. Using a sharp chef's knife, carefully cut each potato in half to ensure they cook evenly. Place the halved potatoes directly into the ceramic insert of the slow cooker.
    Look for Potatoes should be uniform in size for consistent cooking.
    Tip Keep the skins on for added texture and nutrients.

The potatoes should be halved and placed in the slow cooker with the pesto, butter, and parmesan layered on top. Visually check that the butter is distributed across the top of the potatoes. The setup should look organized and ready to begin the gentle heat transformation.

Transformation Phase

  1. Layer the Ingredients
    Add the basil pesto, cubed unsalted butter, and grated Parmigiano-Reggiano over the potatoes in the slow cooker. Do not stir at this stage; simply layering them allows the flavors to meld as the butter melts and the pesto infuses the potatoes during the cooking process.
    Look for Ensure the butter cubes are distributed evenly over the potato surface.
    Tip Use a high-quality store-bought pesto for the best flavor results.

During the three-hour cook, the slow cooker will be filled with the fragrant aroma of basil, garlic, and melting cheese. The potatoes will soften significantly. Check that the lid remains firmly closed throughout this time to maintain the necessary steam for the herb-glazed finish.

Finishing Phase

  1. Slow Cook and Serve
    Cover the slow cooker with the lid. Set the heat to HIGH and cook for three hours. The potatoes are ready when they are buttery soft and coated in a glossy, herb-infused oil. Carefully transfer the potatoes to a warm serving platter and finish by topping with toasted pine nuts and shaved parmesan curls.
    Look for Potatoes should be easily pierced with a fork with no resistance.
    Tip Serve immediately while the potatoes are hot to maintain the best texture.

The final potatoes will be fork-tender and coated in a glossy, vibrant green sauce. The cheese will have melted completely into the pesto. Ensure the potatoes are carefully transferred to the platter so they do not break, then garnish with the pine nuts and parmesan curls for texture.

Common mistakes

A common mistake is overcrowding the slow cooker, which can lead to uneven cooking and result in some potatoes being overcooked while others remain firm.

Ensure the potatoes are in an even layer. Another oversight is failing to properly secure the lid, which allows moisture to escape and prevents the potatoes from steaming correctly.

Do not be tempted to stir the potatoes while they are cooking, as this can break them apart and ruin their texture. Finally, avoid using low-quality pre-grated cheese, as the anti-caking agents can prevent it from melting into a smooth, creamy sauce.

How to tell it’s done

The potatoes are perfectly done when they are tender enough to be pierced easily with a fork, showing no resistance in the center. The cooking time of three hours on HIGH is generally sufficient for standard-sized baby potatoes.

The sauce should appear glossy and should have coated the potatoes evenly, with no signs of separation. The internal temperature of the potatoes is not a safety concern, but they should be thoroughly cooked through and soft to the touch to ensure the best eating experience.

Coming up in Part 3: common questions

  • Can this be made in a smaller slow cooker?
  • Why should the potatoes not be stirred during cooking?
  • Can other types of potatoes be used?

Also in Part 3: variations (Roasted Garlic Twist, Sun-Dried Tomato Version), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)