Melt 360g Bournville plain chocolate with 225g butter, stir in 225g muscovado sugar, 4 beaten eggs, 75g self-raising flour, 1 tsp vanilla, and 75g chocolate chips. Pour into a lined 30 x 23cm tin and bake at 180°C / 160°C fan for 40–45 minutes. Cool completely, then cut into 24 squares.
Which Mary Berry Brownie Recipe Should You Make?
Mary Berry has published at least three distinct chocolate brownie recipes. Each suits a different baker and preference.
| Recipe | Key Feature | Texture | Difficulty | Cost (approx.) |
|---|---|---|---|---|
| Chocolate Brownies (cocoa powder) | One-bowl method, no melted chocolate | Cakey, lighter | Very easy | ~£6.99 |
| Best Ever Brownies (walnuts & coffee) | Richest fat-to-flour ratio | Chewy, dense, dark | Moderate | ~£7.52 |
| Ultimate Chocolate Brownies (Bournville) | Bournville chocolate, muscovado sugar | Fudgy, crackly top | Easy–moderate | ~£8.54 |
Choose the cocoa powder version if you're baking with kids or want a quick, pantry-friendly bake.
Choose the Best Ever version if you want deep, dark chocolate intensity with added texture from walnuts.
Choose the Ultimate version if you want the recipe most likely to impress it scored the highest marks in independent taste tests and is the one published on Mary's official website.
Mary Berry's Ultimate Chocolate Brownies: Full Recipe
What Ingredients Do You Need?
- 360g Bournville plain chocolate (2 × 180g packets) approx. 39% cocoa solids; do not substitute with milk chocolate
- 225g butter, cubed plus extra for greasing
- 225g light muscovado sugar adds caramel depth vs. caster sugar
- 4 large eggs, beaten room temperature melts in better
- 75g self-raising flour sifted
- 1 tsp vanilla extract pure, not imitation
- 75g chocolate chips dark or plain
What Equipment Do You Need?
- 30 x 23cm traybake tin (deep-sided)
- Non-stick baking parchment
- Large heatproof bowl
- Saucepan for double boiler
- Spatula or wooden spoon
- Digital scales
How Do You Make Mary Berry's Chocolate Brownies Step by Step?
- Preheat the oven to 180°C / 160°C fan / Gas 4. Grease and line your 30 x 23cm tin with non-stick baking parchment.
- Melt chocolate and butter in a heatproof bowl set over a pan of barely simmering water. Stir occasionally until fully melted and smooth. Do not let the bowl touch the water.
- Remove from heat and allow to cool slightly for 3–4 minutes.
- Add sugar and eggs to the chocolate mixture. Mix well until smooth and glossy.
- Fold in flour and vanilla. Stir just until combined do not overmix.
- Stir in chocolate chips.
- Pour into prepared tin and smooth the surface with a spatula.
- Bake for approximately 45 minutes, until well risen with set edges and a slightly soft center. The top should form a thin, shiny crust.
- Cool completely in the tin before slicing into 24 squares.
How Long Do Mary Berry Brownies Take to Bake?
At 180°C / 160°C fan, the Ultimate Chocolate Brownies take 40–45 minutes. You are looking for set edges, a thin crackly crust on top, and a center that has a very slight wobble. A skewer inserted into the middle should come out with moist crumbs not clean (overbaked) and not wet with raw batter (underbaked). Note: every oven is different, so start checking at the 35-minute mark.
Mary Berry Chocolate Brownies with Cocoa Powder (Easy Version)
This one-bowl recipe from My Kitchen Table: 100 Cakes and Bakes is ideal for kids and beginner bakers. No melted chocolate required.
Ingredients:
- 275g softened butter
- 375g caster sugar
- 4 large eggs
- 75g cocoa powder
- 100g self-raising flour
- 100g plain chocolate chips
Method: Measure all ingredients except the chocolate chips into one large bowl and beat until smooth. Stir in the chips. Pour into a greased and lined 30 x 23cm tin and bake at 180°C / 160°C fan for 40–45 minutes.
Result: Lighter, more cake-like texture. Less shiny top than the Ultimate version. Great for a quick family bake.
Mary Berry's Fudge Brownie Recipe with Walnuts (Best Ever)
Published in Mary Berry's Complete Cookbook, this is the most indulgent version and the richest in terms of fat and chocolate content.
Ingredients:
- 375g plain chocolate
- 250g baking margarine
- 2 tsp instant coffee dissolved in 2 tbsp hot water
- 2 eggs
- 250g caster sugar
- 1 tsp vanilla extract
- 90g self-raising flour
- 175g walnut pieces
- 250g plain chocolate chips
Note: The coffee does not make the brownies taste of coffee it deepens and amplifies the chocolate flavor. The walnuts add texture. This recipe is best served fresh, as it becomes denser once fully cooled.
What Are Mary Berry's Top Tips for Perfect Chocolate Brownies?
- Don't overbake. Slightly underdone is always better than overdone. The brownies will firm up as they cool.
- Use a deep tin. A shallow tin causes overflow. The 30 x 23cm traybake tin is specifically recommended.
- Cool completely before cutting. Warm brownies will crumble and give you uneven slices.
- Use quality chocolate. Mary specifically recommends Bournville plain chocolate for the Ultimate version. The quality of chocolate is the single biggest factor in flavor.
- Make ahead. These brownies can be made up to 2 days in advance and actually improve slightly in texture over 24 hours.
How Do Paul Hollywood's Brownies Differ from Mary Berry's?
Both bakers use dark chocolate and butter as their foundation, but Paul Hollywood's approach adds a notable upgrade: cocoa nibs sprinkled on top of the batter before baking. According to Simply Recipes (December 2025), this addition provides an earthy, bittersweet crunch that contrasts beautifully with the sweet, fudgy interior.
Hollywood also folds in a mix of milk and dark chocolate chunks, whereas Mary Berry tends to keep her chocolate base consistent. The result from Hollywood's method skews more toward bittersweet, with a more complex texture. Mary's version leans fudgier and more accessible in flavor.
Verdict: Mary Berry's Ultimate Brownies win for reliability and classic British fudginess. Paul Hollywood's version is worth trying if you want a more sophisticated, less-sweet result.
What Are the Best Customizations and Variations?
| Variation | What to Change | Best For |
|---|---|---|
| White chocolate & raspberry | Reduce dark chocolate to 250g, add 100g white chocolate chunks + 150g fresh raspberries | A fruity contrast |
| Triple chocolate | Add 100g milk chocolate chunks + dark chocolate ganache topping | Chocolate lovers |
| Salted caramel | Swirl caramel sauce into batter, top with flaked sea salt before baking | Sweet-salty balance |
| Orange zest | Add 1 tsp finely grated orange zest | Festive / Christmas bakes |
| Gluten-free | Substitute self-raising flour 1:1 with gluten-free flour blend | Dietary needs |
| Nut-free | Omit walnuts, add dried cherries or extra chocolate chips | Nut allergies |
What Is the Secret to Moist Brownies?
Several factors drive moisture:
- High fat content: Butter and chocolate together create the fudgy structure. Mary's Ultimate recipe is 31% fat by total weight.
- Muscovado sugar: Its natural molasses content retains moisture far better than white caster sugar.
- Not overbaking: The most common cause of dry brownies is leaving them in 5–10 minutes too long.
- Condensed milk upgrade: Adding a small amount of condensed milk (replacing part of the butter) creates an exceptionally dense, sticky, almost toffee-like texture a popular hack on TikTok and baking forums.
Is It Better to Bake Brownies in a Glass or Metal Pan?
Use a metal pan. According to America's Test Kitchen, metal conducts heat faster and more evenly than glass or ceramic. This produces brownies that bake taller, chewier, and more fudgy. Glass pans retain heat longer after removal from the oven, which can lead to overbaking around the edges while the center remains underdone.
How Should You Store Mary Berry Chocolate Brownies?
- Room temperature: Store in an airtight container for 3–5 days. Texture typically improves on day 2.
- Refrigerator: Keep for up to 1 week. Bring to room temperature before serving.
- Freezer: Wrap individual squares in cling film and place in a freezer bag. Freeze for up to 3 months.
Serving Suggestions
- Warm with a scoop of vanilla ice cream
- Dusted with icing sugar for a clean, simple presentation
- Paired with fresh raspberries and crème fraîche
- Cut into small squares for afternoon tea or cake sales
- Topped with a drizzle of chocolate ganache (100g dark chocolate melted with 100ml double cream)
For another indulgent British dessert built on rich, dark sweetness, try Mary's sticky toffee pudding the same treacle-deep flavour profile, warm from the oven, drenched in butterscotch sauce. And if you're setting out a full tea spread, pair the brownies with a batch of Mary's buttery shortbread cookies for a chocolate-and-biscuit contrast.
What Are the Most Common Brownie Mistakes to Avoid?
- Overmixing after adding flour develops gluten, leading to a tough, cakey texture
- Using cold eggs prevents smooth incorporation with the chocolate mixture
- Incorrect pan size creates thickness issues that affect baking time
- Opening the oven door early causes uneven rising
- Cutting while warm results in crumbling and uneven squares
Nutrition Information (Per Square, Ultimate Recipe)
| Nutrient | Amount |
|---|---|
| Calories | ~220 kcal |
| Carbohydrates | 21g |
| Protein | 2g |
| Fat | 16g |
| Saturated Fat | 9g |
| Sugar | 16g |
| Fiber | 2g |
Based on 24 squares. Values are approximate.
Frequently Asked Questions
What is the best chocolate for Mary Berry's brownies?
Mary Berry recommends Bournville plain chocolate (approximately 39% cocoa solids) for her Ultimate recipe. For best results generally, use dark chocolate with 50–60% cocoa solids. Above 70% can make brownies overly bitter; milk chocolate alone lacks the depth of flavor needed.
What is the best oil to use in brownies?
Mary Berry's recipes use butter rather than oil. If substituting, a neutral-flavored oil such as vegetable or sunflower oil works best. Avoid olive oil or coconut oil, as both add distinct flavors that compete with the chocolate.
What is a great 1-ingredient upgrade for chocolate brownies?
According to Paul Hollywood and confirmed by Simply Recipes (published December 2025), cocoa nibs sprinkled on top of the batter before baking add an earthy, bittersweet crunch that significantly enhances flavor complexity without added sweetness.
What happens when you add condensed milk to brownie mix?
Condensed milk increases moisture and density, producing a stickier, more toffee-like texture. It also raises the sugar content considerably. It works best as a partial replacement for butter, not an addition on top of the full quantity.
How long do Mary Berry brownies take to bake?
40–45 minutes at 180°C / 160°C fan. Start checking at 35 minutes. The brownies are done when the edges are set, the top has a thin shiny crust, and a skewer inserted into the center comes out with moist crumbs (not wet batter).
Mary Berry's Ultimate Chocolate Brownies
Ingredients
- 360g Bournville plain chocolate (2 × 180g packets)
- 225g butter, cubed (plus extra for greasing)
- 225g light muscovado sugar
- 4 large eggs, beaten (room temperature)
- 75g self-raising flour, sifted
- 1 tsp pure vanilla extract
- 75g dark or plain chocolate chips
Instructions
- Preheat the oven to 180°C / 160°C fan / Gas 4. Grease and line a 30 x 23cm tin with non-stick parchment.
- Melt the Bournville chocolate and butter in a heatproof bowl over a pan of barely simmering water. Do not let the bowl touch the water. Stir until smooth.
- Cool the chocolate mixture for 3–4 minutes.
- Add sugar and eggs and mix well until smooth and glossy.
- Fold in the flour and vanilla just until combined don't overmix.
- Stir in the chocolate chips.
- Pour into the prepared tin and smooth the surface.
- Bake for about 45 minutes until well risen with set edges, a thin shiny crust, and a slightly soft centre.
- Cool completely in the tin before slicing into 24 squares.