Slow Cooker 3-Ingredient Onion Butter Potatoes

Some recipes make you wonder how something so simple can taste this good. These Slow Cooker 3-Ingredient Onion Butter Potatoes are exactly that kind of recipe!

With just tender red potatoes, buttery goodness, and a packet of onion soup seasoning, you can create a cozy side dish with hardly any effort. The slow cooker takes care of the cooking while the potatoes become tender and soak up all those savory onion-butter flavors.

I absolutely love recipes like this for busy days. There’s no complicated sauce to make, no long ingredient list, and no standing over the stove. Just toss everything into the slow cooker, let it do its thing, and come back to a kitchen that smells incredible!

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What Are Onion Butter Potatoes?

These slow cooker potatoes are a wonderfully simple side dish made by coating quartered red potatoes with melted butter and dry onion soup mix.

As the potatoes cook slowly, the butter and onion seasoning create a rich coating that clings to the potato skins and edges. The result is tender potatoes with savory onion flavor and buttery, caramelized-looking bits throughout.

And the best part? Only three ingredients!

Why You’ll Love This Recipe

There’s a reason this recipe is such a keeper.

• Only 3 ingredients
• Minimal prep work
• Uses an affordable pantry staple
• Perfect for busy weeknights
• Great for holidays and family dinners
• No complicated cooking techniques
• Works beautifully as a make-ahead side
• Leftovers can be crisped in a skillet
• Easy to customize with different potatoes

It’s one of those recipes you can make when you need something delicious but don’t want to think too hard about dinner.

What Do Onion Butter Potatoes Taste Like?

The flavor is savory, buttery, and packed with onion goodness.

The red potatoes become wonderfully tender as they cook, while the butter gives them a rich coating. The onion soup mix adds dried onion pieces along with a savory blend of seasonings.

The potato skins add a little extra texture, especially around the edges where some of the onion-butter mixture becomes darker and more concentrated.

It’s simple, hearty, and incredibly comforting!

Ingredients You’ll Need

Red Potatoes

Use 3 pounds of small red potatoes. Scrub them well and cut them into quarters so the pieces cook evenly.

There’s no need to peel them. The skins add color, texture, and flavor.

Unsalted Butter

You’ll need ½ cup, or 1 stick, of melted unsalted butter.

Unsalted butter gives you more control over the final salt level because onion soup mix is already seasoned.

Dry Onion Soup Mix

Two 1-ounce packets of dry onion soup mix provide most of the seasoning for the dish.

It’s such a simple shortcut, but it gives the potatoes plenty of savory onion flavor.

Tools You’ll Need

Keep it simple:

• Slow cooker
• Cutting board
• Sharp knife
• Small bowl or measuring cup
• Large spoon
• Serving bowl

Ingredient Substitutions and Variations

Try Yukon Gold Potatoes

Yukon Gold potatoes are a great alternative if you prefer a naturally creamy texture.

Use Salted Butter

Salted butter can be used, but be careful about adding any additional salt. The soup mix already contains seasoning.

Add a Little Extra Butter

If you prefer a richer coating, you can add a small amount of additional melted butter.

Use a Different Onion Soup Mix

A beef-flavored onion soup mix can give the potatoes a deeper, roast-dinner-style flavor.

Just remember that the beauty of this recipe is its simplicity, so there’s no need to go overboard with additions!

How to Make Slow Cooker Onion Butter Potatoes

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