How to Get Sharp Edges on Fondant Cookies & Cakes

Clean, sharp edges are what make fondant cookies and cakes look professionally finished. They come down to a level base, evenly rolled fondant, and a few simple techniques for covering and trimming.

1. Start With a Level Base

If your cookie or cake is uneven, the fondant will be too.

• Cookies: Use a no-spread dough so the cookies keep the shape of the cutter.
• Cookies: Make sure they’re completely cool, at room temperature, before covering. Cookies straight from the fridge can sweat under the fondant and make it slide.
• Cakes: Cover with a smooth layer of ganache or buttercream and let it firm up before adding fondant.

Tip: If a baked cookie’s edges are a little rough, lightly run a fine grater (like a microplane) around the edge to neaten it.

2. Roll Fondant Evenly

Fondant that’s too thin or uneven gives weak edges and tears easily.

• For cookies: Roll the base layer to 3-4mm, and top layers or details to 2-3mm.
• Use a rolling pin with thickness guides so the sheet is the same all over.
• Go easy on the cornflour. Too much dries fondant out and causes cracks at the edges.

Tip: If fondant dries out quickly, knead in a little shortening before rolling.

3. Cover Using the Right Method

For Cookies

1. Cut the fondant with the same cutter you used for the cookie, so it’s an exact fit.
2. Brush a thin layer of piping gel or edible glue onto the cookie.
3. Place the fondant on and gently press the edges with a fondant smoother or your fingertip.

For Cakes

1. For very sharp edges, use the panelling method: cover the top and sides with separate pieces instead of one large sheet.
2. If covering in one piece, smooth from the top down the sides, working out air pockets as you go.
3. Use a fondant smoother against the sides to define the edge.

4. The Two-Smoother Technique for Cakes

1. Hold one smoother flat on top of the cake and one against the side.
2. Gently press them together at the edge to sharpen it.
3. Work your way around the cake.

Tip: Work carefully. Overworking can stretch or tear the fondant.

5. Press and Trim for Cookies

1. Apply the fondant to the cookie as usual.
2. Line the same cutter up over the fondant and press lightly to neaten the outline.
3. Trim any overhang with a sharp craft knife.

Tip: Run a dry fingertip around the edge to smooth any roughness.

6. Finishing Touches

• Brush away extra cornflour with a soft, dry brush.
• Smooth small edge cracks with a tiny amount of shortening.
• A very light pass with a handheld steamer gives fondant a soft sheen. Don’t overdo it, or it will go sticky.

The Short Version

• Bake no-spread cookies and cover them once fully cooled to room temperature.
• Roll fondant evenly: 3-4mm for the base layer, 2-3mm for top layers.
• Cut fondant with the same cutter as the cookie.
• Smooth, press and trim the edges.

Clean, sharp scrapers make a big difference too. See our Signature Tools.

Frequently Asked Questions

How do I get sharp edges on fondant cookies?

Start with cookies that haven’t spread, cut the fondant with the same cutter, then press and trim the edges neatly once it’s on.

Should I chill cookies before adding fondant?

No. Cookies should be completely cool but at room temperature. Cold cookies can sweat, which makes the fondant slide and go sticky.

Related reads: How to Stop Sugar Cookies Spreading · Common Fondant Problems and How to Fix Them