Easy Lemon Posset Raspberry Cups

Some desserts feel special even when they take almost no effort, and these lemon posset raspberry cups are a great example.

The base is just cream and sugar cooked together, then lemon juice is added to help it set. It sounds too simple to work, but it does every time.

The lemon keeps things light and fresh, so the cream never feels too heavy. The raspberries make each bite bright and a little tart.

You serve them in small glasses, which makes them perfect for guests or a quiet treat at home. They chill in the fridge until soft and set.

Right before serving, I add crushed shortbread and a few extra raspberries on top. It is the finishing touch that pulls everything together.

Why You’ll Love It

Only Three Main Ingredients – The creamy base needs just cream, sugar, and lemon juice to set up beautifully.

No Fancy Equipment – You just need one saucepan and a few glasses to make this dessert.

Silky Smooth Texture – The lemon juice thickens the cream into a soft, spoonable custard with no gelatin needed.

Bright Citrus Flavor – The fresh lemon juice and zest give every bite a zingy, tangy lift.

Recipe Ingredients

• 2 cups Heavy Cream
• 2/3 cup Granulated Sugar
• 5 tbsp Lemon Juice
• 1 tbsp Lemon Zest
• 1 tsp Vanilla Extract
• 1 cup Raspberries
• 6 Shortbread Cookies, Crushed

Directions

Step 1

Add the heavy cream and granulated sugar to a medium saucepan. Bring to a gentle boil over medium heat, stirring until the sugar dissolves.

Step 2

Let the cream bubble gently for 3 minutes, stirring often and reducing the heat if it begins to rise in the pan.

Step 3

Remove the saucepan from the heat. Stir in the lemon juice, lemon zest, and vanilla extract, then let the mixture rest for 5 minutes.

Step 4

Divide half of the raspberries among 6 small dessert glasses. Slowly pour the warm lemon cream over the berries.

Step 5

Refrigerate the posset cups for at least 3 hours, or until completely chilled and softly set.

Step 6

Top each cup with crushed shortbread cookies and the remaining raspberries just before serving.

My Tips

Watch Your Cream Carefully While It Boils

The cream needs to reach a real gentle boil for those 3 minutes, not just get warm. This step is what thickens the posset later, so if you skip it or rush it, your cups won’t set properly and you’ll end up with a runny mess.

Keep stirring and lower the heat if it starts climbing up the sides of the pan. Cream can bubble up fast, so stay close and don’t walk away during this part.

Use Fresh Lemon Juice, Not Bottled

The whole magic of a posset is the fresh lemon juice reacting with the hot cream to set it. From my experience, bottled juice just doesn’t have the same strength and your cups can stay soft.

You’ll need about 2 medium lemons to get your 5 tablespoons. Zest them first before you juice them, since it’s much easier to zest a whole lemon than a squeezed one.

Measure Your Lemon Juice Exactly

Stick to the 5 tablespoons and resist adding more. Too much juice can actually stop the mixture from setting, and too little means it stays loose and won’t firm up.

I recommend measuring it into a small cup first instead of pouring straight from the lemon. That way you know you’ve got the right amount and nothing extra sneaks in.

More Recipes

• Honey Lavender Panna Cotta
• Classic Lemon Bars
• Lemon Meringue Cheesecake
• Caramelized White Chocolate Mousse Cups
• Silky Chocolate Mousse

Frequently Asked Questions

Why won’t my posset set in the fridge?

The most common reason is not using heavy cream with enough fat, since the acid from the lemon needs that high fat content to thicken and set properly.

Make sure you also let the cream bubble gently for the full 3 minutes and add enough lemon juice, because both of those steps are what help it firm up into that soft, spoonable texture.