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Buttered Peas with Onion

This classic recipe for buttered peas with onion transforms a simple freezer staple into a truly delicious vegetarian side dish. By gently simmering the onions before adding the peas, you develop a subtle sweetness that perfectly complements the savoury butter. It is a versatile accompaniment that brings a bright pop of colour and fresh flavour to any dinner table, whether you are serving a formal midweek meal or a traditional weekend gathering.

Quick to prepare and naturally gluten-free, this dish is an excellent choice for busy cooks looking for healthy yet comforting vegetable options. The combination of tender onions and sweet peas works beautifully alongside a Sunday roast, grilled fish, or even a simple vegetarian tart. It is a reliable, budget-friendly recipe that relies on kitchen essentials to deliver maximum taste with minimal effort.

Continue reading below

Ingredients for Buttered Peas with Onion

  • 160ml water

  • 1 medium onion, chopped

  • 2 tablespoons unsalted butter

  • 450g frozen peas (850ml )

How to make Buttered Peas with Onion

Bring water, onion, and 1/2 teaspoons salt to a boil in a heavy medium saucepan, then cook over medium heat, covered, stirring occasionally, until onion is tender, about 5 minutes.

Increase heat to medium-high and stir in butter and peas, then cook, covered, stirring occasionally, until peas are tender, about 8 minutes. Season with salt.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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