Mashed Potato and Cabbage Casserole with Cheddar Cheese

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A comforting layered casserole with creamy mashed potatoes, savory cabbage, and melted cheddar, baked to golden perfection. This irish-inspired one pot (vegetarian) ready in about 60 minutes pairs medium potatoes, milk, butter for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 calories and feeds 8, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 25 min Cook: 35 min Serves 8 Irish cuisine 280 cal/serving
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Ingredients

Instructions

  1. Step 1: Boil 4 medium potatoes, peeled and diced, in a pot of salted water for 20 minutes until tender. Drain and mash with 1 cup milk and 3 tbsp butter until smooth.
  2. Step 2: Cook 1 medium head cabbage, thinly sliced, in a large skillet over medium heat for 10 minutes until wilted, stirring occasionally.
  3. Step 3: In a small bowl, whisk 2 tbsp all-purpose flour with 1 cup chicken broth until smooth. Pour into the skillet and cook for 5 minutes until thickened.
  4. Step 4: Stir in 1/2 tsp salt, 1/4 tsp black pepper, and 1/2 cup shredded cheddar cheese until melted.
  5. Step 5: Spread half the mashed potatoes in a greased 9x13-inch baking dish. Top with the cabbage mixture, then the remaining mashed potatoes. Sprinkle 1/4 cup breadcrumbs over the top.
  6. Step 6: Bake at 375°F for 25 minutes until golden and bubbling.

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Frequently asked questions

How long does Mashed Potato and Cabbage Casserole with Cheddar Cheese take to make?

Total time is about 60 minutes (25 min prep + 35 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Mashed Potato and Cabbage Casserole with Cheddar Cheese?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep medium potatoes from drying out.

Can I substitute ingredients in Mashed Potato and Cabbage Casserole with Cheddar Cheese?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Mashed Potato and Cabbage Casserole with Cheddar Cheese for a different number of people?

The recipe is written for 8 servings. Multiply each ingredient by (your serving target / 8). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Mashed Potato and Cabbage Casserole with Cheddar Cheese vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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