Slow Cooker Potato and Onion Bake

Here’s a simple, comforting Slow Cooker Potato and Onion Bake—a hands-off dish that’s perfect as a side or a vegetarian main. It’s like a creamy, cheesy scalloped potato recipe but made easy in the crockpot.

Slow Cooker Potato and Onion Bake

Ingredients:

Amount	Ingredient
2 lbs	Potatoes (Yukon Gold or Russet), thinly sliced (⅛–¼ inch thick)
2 large	Yellow or sweet onions, thinly sliced
3 cloves	Garlic, minced
1½ cups	Heavy cream (or half-and-half for lighter version)
1 cup	Chicken or vegetable broth
2 cups	Shredded cheese (Gruyère, cheddar, or a mix)
½ cup	Grated Parmesan cheese
2 tbsp	Butter, cut into small pieces
1 tsp	Salt
½ tsp	Black pepper
1 tsp	Dried thyme (or 1 tbsp fresh)
½ tsp	Paprika (optional)
2 tbsp	Fresh parsley, chopped (for garnish)

Instructions:

Step 1: Prepare the Potatoes & Onions

Wash and slice potatoes thinly. You can peel them or leave skins on (scrub well if unpeeled).
Slice onions into thin rings or half-moons.
Mince garlic finely.

💡 Tip: Use a mandoline slicer for even, thin slices. Uniform thickness ensures even cooking.

Step 2: Layer in the Slow Cooker

Grease the inside of your slow cooker with butter or non-stick spray. Then layer as follows:

First layer: A single layer of potato slices (overlapping slightly).
Sprinkle: A little salt, pepper, thyme, minced garlic, and a pinch of paprika.
Add onions: A handful of sliced onions.
Add cheese: Sprinkle shredded cheese and a little Parmesan.
Repeat layers (potato → seasoning → onions → cheese) until all ingredients are used, ending with cheese on top.
Dot with butter pieces over the top layer.

Step 3: Make the Cream Mixture

In a small bowl or measuring cup, whisk together:

Heavy cream
Broth

Pour this mixture evenly over the layered potatoes and onions. It should come about ¾ of the way up the sides (not fully submerged).

Step 4: Cook

Low setting: 5–6 hours
High setting: 3–4 hours

✅ Doneness check: Potatoes should be fork-tender and the edges golden brown. The cream will thicken into a rich sauce.

Step 5: Finish & Serve

Optional crisp top: Remove the lid for the last 30 minutes of cooking, or transfer to a baking dish and broil for 3–5 minutes until bubbly and browned.
Garnish with fresh parsley before serving.

Variations:

Variation	Changes
Lighter version	Use half-and-half instead of heavy cream, reduce cheese by half
Add protein	Layer in cooked ham, crumbled bacon, or shredded rotisserie chicken
Herb swap	Use rosemary, sage, or oregano instead of thyme
Cheese options	Fontina, Monterey Jack, Swiss, or a smoked cheese
Vegan version	Use full-fat coconut milk + ½ cup cashew cream, and vegan cheese shreds
With leeks	Replace half the onions with sliced leeks (white and light green parts)

Pro Tips for Best Results:

Tip	Why It Matters
Don’t overfill the slow cooker	Leave 1 inch of space at the top for bubbling
Slice potatoes uniformly	Prevents some pieces being mushy while others are raw
Layer, don’t just mix	Layering ensures every bite has potato, onion, and cheese
Use waxy or all-purpose potatoes	Russets can get grainy; Yukon Gold or red potatoes hold shape better
Spray the slow cooker liner	Makes cleanup infinitely easier

Serving Suggestions:

As a side dish: Serve alongside roasted chicken, meatloaf, pork chops, or a steak.
As a main dish: Top with a fried egg and a side green salad.
Breakfast version: Add crumbled breakfast sausage and serve with eggs.

Storage & Reheating:

Refrigerate: Store in an airtight container for up to 4 days.
Reheat: Microwave individual portions, or reheat in a 350°F oven for 10–15 minutes (add a splash of broth or cream if dry).
Freeze: Not recommended—potatoes become mealy after thawing.

Would you like me to share:

How to make this in the oven instead (for a crispier top)?
A dairy-free/vegan version using coconut milk and nutritional yeast?
Other slow cooker potato recipes (like mashed potatoes or baked potatoes)?