How to Make Onion Gravy: Rich, Smooth & Full of Flavour

Homemade onion gravy is simple to make and far tastier than shop-bought versions. With just a few basic ingredients, you can create a rich, savoury gravy that’s perfect for sausages, mash, roasts, pies, and more.

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This guide shows you a classic, easy method that works every time.

🧅 Ingredients for Onion Gravy

You will need:

• 1–2 onions, thinly sliced
• Butter or oil
• 1 tablespoon plain flour
• 500ml stock (beef, chicken, or vegetable)
• Salt and black pepper

Optional extras: Worcestershire sauce, soy sauce, a splash of wine, or a pinch of sugar.

🍳 How to Make Onion Gravy

1️⃣ Cook the Onions

Heat butter or oil in a pan over medium heat. Add the sliced onions and cook gently for 10–15 minutes, stirring regularly, until soft and golden. Don’t rush this step — slow cooking brings out sweetness.

2️⃣ Add the Flour

Sprinkle the flour over the onions and stir well. Cook for 1–2 minutes to remove the raw flour taste.

3️⃣ Add the Stock

Gradually pour in the stock, stirring constantly to prevent lumps. Bring to a gentle simmer.

4️⃣ Simmer

Let the gravy simmer for 5–10 minutes until it thickens and becomes glossy. Stir occasionally.

5️⃣ Season

Season with salt and black pepper. Add any optional extras to taste.

🔥 Tips for Perfect Onion Gravy

• Cook onions slowly for deeper flavour
• Stir constantly when adding stock
• Simmer gently, don’t boil hard
• Taste before adding extra salt
• Add a knob of butter at the end for richness

If the gravy is too thick, add a splash of water or stock. If it’s too thin, simmer a little longer.

🌿 Variations

• Vegetarian onion gravy: use vegetable stock
• Dark onion gravy: add Worcestershire sauce or soy sauce
• Smooth gravy: blend briefly with a hand blender
• Extra rich gravy: add a splash of cream or butter

🍽️ What to Serve Onion Gravy With

Onion gravy is perfect with:

• Sausages and mash
• Roast dinners
• Pies and pasties
• Yorkshire puddings
• Meatballs or veggie bakes

🌿 Final Thoughts

Once you know how to make onion gravy from scratch, it becomes a quick, reliable kitchen staple. With softly cooked onions and good stock, you’ll get a rich, comforting gravy every time.

Simple ingredients, big flavour.