Method

  1. Prepare the pan and trail mix

    Heat the oven to 175°C (350°F) with a rack in the middle. Line a 20 x 20 cm (8 x 8 in) square pan (for 8 servings) with parchment, leaving overhang on two opposite sides. For scaled batches, choose a pan that keeps the mixture about 1.5 to 2 cm (5/8 to 3/4 in) deep; pan dimensions do not scale directly. Chop 45 g of raw almonds into pea-size pieces and set aside a small spoonful for the top. Set aside a small spoonful from 30 g of unsalted sunflower seeds, 40 g of raisins, 40 g of dried cranberries, and 40 g of mini semisweet chocolate chips. Add remaining chopped almonds, remaining seeds, remaining fruit, and remaining chocolate to a large bowl with 120 g of old-fashioned rolled oats, 30 g of plain crisp rice cereal, and 2 g of ground cinnamon, then stir until evenly distributed.

  2. Warm the peanut butter binder

    Add 120 g of smooth peanut butter, 85 g of honey, 14 g of coconut oil, and 1.5 g of fine sea salt to a small saucepan. Warm over low heat, stirring constantly, for 2 to 3 minutes until fluid, glossy, and just steaming. Begin checking at 2 minutes and do not let the mixture boil. Remove the pan from the heat.

    02:00
  3. Combine and compact the slab

    Unbaked trail mix slab pressed evenly into a parchment-lined square pan before baking

    Pour the warm binder over the dry mixture and fold from the bottom until every oat flake is coated and no dry pockets remain. Scrape the mixture into the prepared pan and push it firmly into all four corners. Lay a second sheet of parchment over the surface and press with the flat base of a measuring cup until the layer is level, dense, and about 1.5 to 2 cm (5/8 to 3/4 in) deep. Remove the top sheet, distribute the reserved almonds, seeds, fruit, and chocolate across the surface, and press them in until flush.

  4. Bake until the edges are set

    Baked trail mix slab with deep golden edges and a dry-looking center before cooling

    Bake at 175°C (350°F) for 18 to 22 minutes. Begin checking at 18 minutes; the edges should be deep golden, the center should look dry rather than glossy, and the surface should spring back slightly when pressed with a spatula. If the edges darken before the center sets, loosely shield the perimeter with foil for the final minutes.

    18:00
  5. Cool and cut the tiles

    Eight equal cooled trail mix tiles cut from one slab on a cutting board

    Set the pan on a heatproof surface and cool for 30 minutes. The slab should feel firm at the edges and hold together when lifted, while the center remains slightly chewy. Use the parchment overhang to lift it out and transfer it to a cutting board. For the default 8-tile batch, cut the 20 x 20 cm (8 x 8 in) slab into eight equal 5 x 10 cm (2 x 4 in) rectangles; for scaled batches, divide the slab into the selected number of equal square or rectangular tiles. Serve once the cut edges hold their shape.

    30:00
Cook's noteCompression is the structure step: press the mixture until it feels like one dense slab, especially in the corners, or the cut tiles will shed loose pieces. This recipe contains peanuts and almonds; packaged cereal and chocolate may also contain milk or soy depending on the product.

Smart Substitutions

  • Using sunflower seed butter? Replace the peanut butter by weight and swap the almonds for pumpkin seeds; the flavor will be toastier and less peanut-forward.
  • No coconut oil? Use the same amount of melted unsalted butter for a slightly softer, buttery edge.
  • Different dried fruit? Use chopped dried cherries, apricots, or dates in the same total weight, keeping pieces no larger than the raisins.
  • No crisp rice cereal? Replace it with additional rolled oats by weight; the tiles will be denser and chewier.

Tips and Variations

  • Keep almond pieces no larger than a pea so the knife can pass through the slab without dragging out large chunks.
  • Use a sheet of parchment between the mixture and measuring cup to compact the surface without sticking.
  • Press the reserved fruit, seeds, nuts, and chocolate flush with the top so they stay attached when the slab is cut.

What Went Wrong?

  • The mixture will not hold together Warm it briefly until the binder is fluid, then fold again and press much more firmly into the pan.
  • The tiles crumble when cut Let the slab complete the full 30-minute cooling period and use a sharp straight-down cut rather than a sawing motion.
  • The edges brown too quickly Confirm the pan is on the middle rack and loosely shield the perimeter with foil while the center finishes setting.
  • The center stays soft Bake for 2 to 4 minutes longer, checking for a dry-looking surface and gentle spring before removing the pan.

Nutrition Estimate

Calories320
Protein8 g
Carbs39 g
Fat16 g
  • Fiber: 4 g per serving
  • Sodium: 170 mg per serving

Nutrition disclaimer:This recipe is provided for general cooking information only. Nutrition values are estimates and may vary by ingredients, brands, preparation methods, and serving sizes. Check ingredient labels and follow appropriate food-safety practices. This content is not medical, dietary, allergy, or professional food-safety advice.

FAQ

Can I use quick oats?Yes. Use the same weight, expect a softer and more uniform texture, and avoid steel-cut oats because they will remain too hard.
Why add crisp rice cereal?It breaks up the dense oat-and-nut mixture with light crunch, making each tile easier to bite without weakening the binder.
How do I scale the pan?Choose a pan that keeps the mixture about 1.5 to 2 cm (5/8 to 3/4 in) deep. Pan dimensions do not scale directly with the serving count.