These Gluten-Free Halloween Mummy Crispy Rice Bars are crisp-chewy, vanilla-marshmallow squares finished with a clean white drizzle and candy eyes for instant spooky charm. The method below uses certified gluten-free crispy rice cereal and marshmallows (some brands dust with wheat starch—labels matter), plus oil-thinned candy coating that sets glossy at room temperature. The bars press neatly, slice without crumbling, and hold texture for days—ideal for school parties and mixed-diet gatherings.
Ingredients & Measurements
- Yield: 24 bars (cut 6 × 4 from a 9 × 13 in pan)
- 45 g (3 Tbsp) unsalted butter or dairy-free butter, cut into pieces
- 10 g (2 tsp) neutral oil (canola or refined coconut), divided
- 300 g (10½ oz; about 6 cups) mini marshmallows, certified gluten-free
- ½ tsp fine sea salt
- 2 tsp pure vanilla extract
- 170 g (6 cups) crispy rice cereal, certified gluten-free (check label; avoid malt flavoring)
- Optional mix-ins (choose up to 1 cup total): 80 g (1 cup) gluten-free pretzels, broken small; 60 g (1 cup) freeze-dried strawberries lightly crushed; 60 g (1 cup) mini chocolate chips (GF)
- 280 g (10 oz) bright white gluten-free candy melts (or GF white baking chips)
- 24–48 small gluten-free candy eyes (read labels)
- Black decorating gel or 20 g (2 Tbsp) melted dark chocolate for pupils (optional)
- Nonstick spray or a few drops of neutral oil for pan and hands
- Parchment paper to line pan (23 × 33 cm / 9 × 13 in)

Step-by-Step Instructions
- Prepare the pan and tools. Lightly spray a 9 × 13 in metal baking pan. Line with parchment, leaving a 2–3 cm overhang on the long sides for easy lifting. Lightly oil a silicone spatula and a second sheet of parchment—the oiled tools prevent sticking and give a smooth top.
- Melt the marshmallows gently. In a large pot over low heat (about 70–80°C / 160–175°F), melt the 45 g butter with 1 tsp oil, stirring until just liquid, 1–2 minutes. Add marshmallows and salt; cook, stirring constantly, until mostly melted with a few soft lumps, 3–4 minutes. Take off heat and stir in vanilla. Low heat prevents a tough, rubbery bar.
- Fold in cereal for even coating. Immediately add the crispy rice cereal (and any optional mix-ins) to the pot. Using the oiled spatula, fold from bottom to top until every piece is lightly glossed, 45–60 seconds. Work quickly—mixture sets as it cools.
- Pack into the pan for neat edges. Scrape the mixture into the lined pan. Place the oiled parchment sheet on top and press firmly and evenly, paying attention to corners; aim for a level thickness of about 2.5 cm / 1 in. Remove the top parchment. Let the slab stand at room temperature 20 minutes to set before decorating.
- Melt the coating to the right fluidity. Place 280 g white candy melts in a microwave-safe bowl with 1 tsp neutral oil. Heat at 50% power in 30-second bursts, stirring between, until just smooth and pourable (target 31–32°C / 88–90°F), 90–120 seconds total. The small amount of oil creates thin, clean lines that set hard.
- Lift and portion before decorating. Use the parchment handles to lift the slab onto a board. Trim 2–3 mm from the edges for crisp sides (snack on the trimmings). Cut into 24 bars with a long knife, wiping the blade with a warm, dry cloth between cuts for tidy faces.
- Add the mummy “bandages.” Transfer half of the melted coating to a small zip-top bag; push to a corner and snip a 2–3 mm tip. Pipe irregular, slightly angled lines across each bar, leaving a small oval gap near the top third for eyes. Vary line angles to mimic gauze. Let the drizzle set 5 minutes until tacky.
- Place the eyes precisely. Press 1–2 candy eyes into each gap. If using plain white chips instead of candy eyes, pipe two tiny dots of coating and set a micro dab of black gel or a dot of melted dark chocolate as pupils. Allow the bars to stand 10–15 minutes until fully dry to the touch.
- Finish and store correctly. Transfer bars to paper liners or a parchment-lined container. Store airtight at cool room temperature (18–22°C / 65–72°F) for up to 5 days. Avoid refrigeration; condensation can dull the coating and soften the texture.
- Scale cleanly for parties. For 48 bars, double all ingredients and press the mixture into two lined 9 × 13 in pans. Melt coating in two batches to keep it fluid; if it thickens, rewarm 10–15 seconds at 50% power and stir well.
Cooking Notes
- Choose safe ingredients: Look specifically for labels that say “Certified Gluten-Free.” Standard crispy rice cereal often contains malt (barley); switch to a GF brand. Some marshmallows use wheat starch as an anti-caking agent—again, read labels. Candy eyes and decorating gels can include wheat-derived binders; buy GF-certified versions or make eyes with white chips and chocolate pupils.
- Texture control: For a chewier bar, reduce cereal to 5½ cups (155 g). For a firmer, crispier bite that travels well in lunchboxes, increase cereal to 6½ cups (185 g).
- Dairy-free/vegan options: Replace butter with 45 g refined coconut oil or a solid dairy-free butter. Use vegan marshmallows (they melt a bit slower; add 1–2 tsp extra oil for smoothness), and choose dairy-free coating and eyes. Flavor will be slightly less buttery but still excellent.
- Flavor variations:
- Pumpkin-spice mummies: Stir 1 tsp pumpkin pie spice into the melted marshmallows.
- Chocolate-orange: Add 1 Tbsp cocoa to the marshmallow mix and finish with orange-tinted GF melts.
- Salty crunch: Fold in ½ cup crushed GF pretzels and finish with a light sprinkle of flaky salt before the drizzle sets.
- Clean slicing: Let bars rest 30 minutes after drizzling so the coating is fully firm. Use a long, sharp chef’s knife; warm the blade under hot water, dry thoroughly, then cut in straight downward presses rather than sawing.
- Allergy labeling for events: If serving at school or community parties, provide a small card listing potential allergens (dairy if using butter/white chips; soy from some coatings; peanuts if adding mix-ins). Clear labels make gluten-free guests—and their families—confident.
- Make-ahead and shipping: Press the slab, cool, cut, and drizzle up to 3 days in advance. For mailing, wrap pairs of bars back-to-back in parchment, then in plastic wrap, and cushion well in a rigid tin; avoid hot transit windows.
- Presentation tips: Arrange bars in alternating directions on a dark slate or black-lined platter for high contrast. A light dusting of cocoa around the edges (not on the bars) makes the white bandages pop in photos and on buffet tables.
Nutrition Facts (per serving)
- Serving size: 1 bar (1/24 of pan)
- Approximate calories: 180 kcal
- Total fat: 6 g
- Saturated fat: 3.5 g
- Carbohydrates: 30 g
- Dietary fiber: 0–1 g
- Total sugars: 17 g
- Protein: 2 g
- Sodium: 95 mg
Conclusion
These Gluten-Free Halloween Mummy Crispy Rice Bars deliver festive looks, familiar flavors, and a texture that stays crisp-chewy on the buffet—without a speck of gluten. By focusing on certified GF pantry staples, gentle melting, and a thin, well-set drizzle, you’ll get clean slices that pack and travel beautifully. Scale the batch for parties, label clearly for mixed-diet groups, and enjoy a spooky treat that everyone can reach for with confidence.