At first glance, these little hearts and flowers look like pieces of frosted glass. They catch the light, have a smooth finish, and can be made in soft shades of pink, blue, green, or lavender. The surprising part? You don’t need glass, expensive clay, or special equipment to make them.
The dough is made from simple household ingredients: cornstarch, baking soda, and water. Once cooked into a soft dough, it can be rolled, cut into shapes, colored, and dried into lightweight decorations.
It’s an inexpensive project that’s especially nice for making window decorations, gift tags, garlands, seasonal ornaments, or keepsakes.
And there’s one small trick that makes these decorations look much better: keep the dough evenly rolled rather than making some pieces much thicker than others.
Why This Homemade Dough Looks Like Frosted Glass
This isn’t actually glass, of course.
The finished pieces are a type of homemade air-dry craft dough. The smooth white surface and slightly translucent appearance can give the decorations a frosted or sea-glass-like look, especially when they’re made relatively thin and placed near a window.
The basic cornstarch-and-baking-soda dough is a well-established craft recipe. A commonly used ratio is 1/2 cup cornstarch, 1 cup baking soda, and 3/4 cup water, cooked on the stovetop until it thickens to a mashed-potato-like consistency. (Apartment Therapy)
Once the dough cools, it can be kneaded until smooth and rolled out for cutting.
What You’ll Need
For a batch of small decorations:
- 1 cup baking soda
- 1/2 cup cornstarch
- 3/4 cup water
- Liquid or gel food coloring
- Heart and flower cookie cutters
- Parchment paper
- Rolling pin
- Medium saucepan
- Wooden spoon or silicone spatula
- Drinking straw or small skewer for hanging holes
Optional:
- Ribbon or twine
- Fine craft glitter
- Acrylic paint
- Clear craft sealer
- Small paintbrush
Keep the craft materials separate from anything you use for food preparation afterward. Even though the basic ingredients are kitchen ingredients, once you add craft paint, sealers, glitter, or other decorations, the finished pieces are strictly decorative.
Step 1: Make the Dough
Add the baking soda, cornstarch, and water to a medium saucepan.
Stir everything together before turning on the heat. This helps break up dry pockets and gives you a smoother mixture.
Place the saucepan over medium heat and keep stirring.
After several minutes, the mixture will begin to thicken.
You’re looking for a consistency similar to thick mashed potatoes. The dough should pull together rather than behaving like a pourable batter. This cooking method is consistent with established cornstarch-and-baking-soda ornament recipes. (Apartment Therapy)
Once it forms a thick dough, remove the pan from the heat.
Step 2: Let It Cool
Transfer the hot dough onto parchment paper or another clean work surface.
Cover it with a slightly damp cloth while it cools.
Don’t rush this part.
The dough needs to be cool enough to handle comfortably before you start kneading it.
Once it’s manageable, knead it gently until it becomes smooth and flexible.
If the dough feels slightly sticky, give it a little more time to cool before immediately adding extra cornstarch. Temperature can affect how the dough feels while you’re working with it.
Step 3: Add Color
This is where you can create the pretty stained-glass effect.
Divide the dough into several portions and add a small amount of food coloring to each one.
Try:
- Soft pink
- Pale blue
- Lavender
- Mint green
- Peach
- Light yellow
Start with a tiny amount of coloring and knead it through the dough.
It’s much easier to make the color darker by adding more than it is to fix dough that’s become far too bright.
For a softer, more elegant result, pastel shades work particularly well.
Step 4: Roll the Dough Evenly
Place the dough between sheets of parchment paper.
Roll it out to approximately 1/4 inch thick.
Try to keep the thickness as even as possible.
This matters more than getting the measurement absolutely perfect.
If one side is very thick and another is extremely thin, the pieces can dry unevenly and may become more fragile or curl.
A quarter-inch thickness is also a commonly recommended starting point for this type of ornament dough. (Gilpin County)
Step 5: Cut the Hearts and Flowers
Use cookie cutters to cut your shapes.
Hearts and flowers are especially pretty, but you can also use:
- Stars
- Leaves
- Circles
- Snowflakes
- Butterflies
- Geometric shapes
Press the cutter firmly into the dough and lift it straight up.
If the edges look rough, smooth them gently with your fingertip before moving on.
Don’t make the designs too complicated at first. Simple shapes tend to give the cleanest results.
Step 6: Make a Hole for Hanging
If you want to turn the shapes into ornaments, make the hanging hole before the dough dries.
A drinking straw works well for larger pieces.
For smaller decorations, use a skewer or similar blunt tool.
Position the hole far enough from the edge that it won’t break through when the ornament is dry.
This is one of those tiny steps that’s easy to forget until it’s too late.
Step 7: Dry the Decorations
Place the cut shapes on parchment paper in a single layer.
You can allow them to air-dry for roughly 24 to 48 hours, depending on their thickness, humidity, and the conditions in your home. Some versions of this craft can also be dried in a low oven. (Brighter Day Press)
If you’re air-drying them, turn them carefully as they dry if needed.
Don’t stack them.
And don’t move them around constantly.
The less you disturb the pieces while they’re still soft, the better chance they have of keeping their shape.
The Trick for a More “Glass-Like” Finish
The finished decorations won’t become transparent like real glass.
Instead, you’re aiming for a smooth, pale, slightly light-catching surface.
The best way to emphasize that look is to:
- Roll the dough evenly.
- Avoid very thick shapes.
- Use soft colors.
- Let the pieces dry completely.
- Hang them where natural light can reach them.
A sunny window is particularly effective because the light makes the pastel colors stand out.
What If the Dough Cracks?
Small cracks can happen while the dough dries.
Several things can contribute:
- Pieces that are too thick
- Uneven thickness
- Dough that’s too dry
- Moving the decorations before they’re firm
- Very rapid drying
If you notice cracks while you’re still working with the dough, gently knead it and make sure it isn’t drying out on the work surface.
For future batches, focus on rolling the dough evenly and keeping the pieces relatively small.
