Caramelized Onion Boxty with Fresh Thyme

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A traditional Irish potato pancake enhanced with deeply sweet onions and aromatic thyme, perfect as a hearty side or light meal. This irish-inspired vegetarian ready in about 50 minutes pairs potatoes, all-purpose flour, medium onions for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 4, 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: 20 min Cook: 30 min Serves 4 Irish cuisine 320 cal/serving
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Ingredients

Instructions

  1. Step 1: Peel and grate 1 lb potatoes using a box grater, then squeeze excess moisture through a clean kitchen towel.
  2. Step 2: Heat 2 tbsp olive oil in a skillet over medium-low heat, add 2 medium sliced onions, and cook slowly for 20-25 minutes until golden and caramelized, stirring occasionally.
  3. Step 3: In a bowl, combine grated potatoes, 1/4 cup all-purpose flour, 1/2 tsp salt, 1/4 tsp black pepper, and 2 tsp fresh thyme. Mix until evenly distributed.
  4. Step 4: Form 6 equal portions into 1/2-inch-thick patties. Heat 1 tbsp olive oil in a non-stick skillet over medium heat, then cook patties for 4-5 minutes per side until golden brown and crispy.
  5. Step 5: Serve hot with caramelized onions spooned over the top.

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Frequently asked questions

How long does Caramelized Onion Boxty with Fresh Thyme take to make?

Total time is about 50 minutes (20 min prep + 30 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 Caramelized Onion Boxty with Fresh Thyme?

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 potatoes from drying out.

Can I substitute ingredients in Caramelized Onion Boxty with Fresh Thyme?

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 Caramelized Onion Boxty with Fresh Thyme for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). 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.

What goes well with Caramelized Onion Boxty with Fresh Thyme?

Irish vegetarian like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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