Slicing & Filling a Cake | The Pro Method for Clean Layers
Chef Alan TetreaultIn this tutorial: What You'll Need · Leveling the Cake · Slicing the Cake into Layers · Preparing the Fillings · Building the Dam and Adding Filling · Stacking and Filling the Second Layer · Quick Reference
Learning how to torte a cake – slicing it into even layers and filling them – is one of the most essential skills in cake decorating. Whether the goal is a simple birthday cake or an elegant tiered wedding cake, fillings add both flavor and visual impact. In this tutorial, Chef Alan Tetreault of Global Sugar Art demonstrates how to level, slice, and fill a 9-inch cake using raspberry filling and buttercream, with tips for preventing bulging in tiered designs.
What You'll Need
- 9-inch cake pan (2-inch depth) – Chef Alan uses a Fat Daddio's pan; shop cake pans
- Long serrated knife – for leveling the cake
- Cake slicer (Wilton) – for cutting even horizontal layers
- Toothpicks – an alternative guide for slicing without a cake slicer
- Pastry filling (raspberry) – Chef Alan uses Henry & Henry raspberry filling
- Buttercream frosting – shop frostings
- Disposable pastry bags – for piping the buttercream dam
- Offset spatula – for spreading filling
- Cake board – for supporting the layers
Leveling the Cake
The first step is to create a perfectly flat, even layer from the baked cake. Chef Alan starts with a 9-inch cake that has been baked, cooled on a rack, and chilled for easier handling.
- Place the chilled cake back into the same 2-inch pan it was baked in.
- Using a long serrated knife, run the blade along the top edge of the pan to trim off the dome.
- The pan acts as a guide, producing a perfectly level 2-inch layer.
💡 Why chill the cake first? A cold cake is firmer and easier to handle, reducing crumbling and tearing during slicing.
💡 Why use a 2-inch pan? Chef Alan aims for a finished cake between 3 and 4 inches high. Starting with level 2-inch layers and stacking them with filling achieves that height cleanly.
Slicing the Cake into Layers
Once the cake is leveled, it needs to be sliced horizontally – a technique called torting – to create thinner layers for filling.
↪ Using a Cake Slicer
- Flip the leveled cake over onto a cake board (flat side down).
- Set the Wilton cake slicer to the desired height – setting 1 will cut the layer roughly in half.
- Slide the serrated knife through the cake, using the slicer's guides to keep the cut level.
↪ Using Toothpicks as a Guide
No cake slicer? No problem.
- Insert toothpicks around the perimeter of the cake at the exact height where the cut should be.
- Use a long serrated knife, following the toothpicks as a guide while slicing through.
💡 Tip: The toothpick method works just as well as a commercial slicer – just take time to measure consistently around the cake.
Preparing the Fillings
Chef Alan prepares two fillings for this cake:
- Straight raspberry filling – Henry & Henry raspberry pastry filling, used directly from the bag. This filling works for cakes, turnovers, cookies, and other baked products.
- Raspberry-flavored buttercream – a small amount of the raspberry filling is mixed into white buttercream to create a flavored, tinted buttercream.
💡 Flavor options: Pastry fillings come in many varieties – lemon, apricot, strawberry, raspberry, blueberry, apple, Bavarian cream, and chocolate cream. The fruit-based flavors mix well with buttercream; cream-based flavors are best used on their own.
Building the Dam and Adding Filling
The dam is a ring of buttercream piped around the edge of each cake layer. It prevents the softer filling from squeezing out the sides – especially important under the weight of stacked layers.
- Fill a disposable pastry bag with white buttercream and cut about one inch off the tip.
- Pipe a ring of buttercream around the outer edge of the cake layer, creating a raised border.
- Spoon or pipe the raspberry filling inside the buttercream dam, spreading it evenly.
⚠️ For tiered or wedding cakes: Buttercream dams can soften under weight and allow bulging over time. Chef Alan recommends rolling a rope of fondant and placing it around the outside edge instead, secured with a small amount of buttercream. This provides a much stronger barrier against the outward pressure created when heavy tiers compress the layers.
Stacking and Filling the Second Layer
- Gently place the second cake layer on top of the filled first layer.
- Pipe another dam around the edge – this time using the raspberry-flavored buttercream.
- Fill the interior with raspberry filling as before.
💡 Color bleed prevention: When using a colored filling, use the same colored (flavored) buttercream for the dam. White buttercream next to a colored filling can allow the color to bleed through and show on the outside of the finished cake.
Once the final layer is placed on top, the cake is ready for crumb coating and icing.
Quick Reference
| Step | Tool / Product | Key Detail |
|---|---|---|
| Level the cake | Serrated knife + baking pan | Trim dome using pan edge as guide |
| Slice into layers | Cake slicer or toothpicks | Setting 1 cuts a 2-inch layer roughly in half |
| Mix flavored buttercream | Buttercream + pastry filling | Add filling to taste; fruit flavors mix best |
| Build the dam | Pastry bag + buttercream | Pipe around outer edge to contain filling |
| Fill the layer | Raspberry filling + spatula | Spread evenly inside the dam |
| Tiered cake upgrade | Fondant rope instead of buttercream dam | Prevents bulging under stacked weight |
What's Next in This Series
This tutorial is the first in a series from Chef Alan Tetreault. Upcoming videos cover how to properly ice a cake with buttercream (including using a cake comb for side designs) and how to finish the top with buttercream flowers and decorations.
This tutorial is part of Global Sugar Art's library of free cake decorating videos by Chef Alan Tetreault. Browse all tutorials →
