Over 5 years ago, shortly after I started this blog (oh my goodness, has it really been that long??), I began baking a batch of homemade granola every weekend. Because I grabbed a handful before running out the door in the mornings, nibbled on it as afternoon snacks, and snuck a few spoonfuls before bed, I could easily polish off a box from the supermarket in two days, so continuing to stick with store-bought would’ve taken quite a big chunk of change out of my wallet!
Throughout the week, I looked forward to my Saturday morning routine: wake up without an alarm, run as far as I felt like (sometimes 4 miles, sometimes 8, but usually somewhere in between), spend as long as I wanted in the hot shower, and start my batch of granola while munching on a bowl of my favorite Trader Joe’s cereal. (← I ate that every single day for nearly 6 years… So good!)
I followed this recipe of mine, something relatively simple with lots of cozy cinnamon and plenty of crunchy clusters. After mixing everything together and popping the pan in the oven, I’d curl up on my sofa with a book and wander back into the kitchen every 15 or 20 minutes to stir around the granola until it turned perfectly crunchy. Once it cooled, I’d sprinkle generous handfuls of raisins on top before transferring it to my special glass granola jar on the counter.
In hindsight, I probably should’ve hidden that granola jar inside of a cupboard instead of leaving it in plain sight… Because I glanced at it every time I walked into the kitchen, which lead to grabbing a handful… Or two… Or three… Multiple times a day. No wonder I ran out so quickly!
Now fast forward to the fall of 2014, when I visited my parents during their long kitchen remodel. With only a convection-style toaster oven and no stove, they rarely cooked meals, turning to lots of cold cereal breakfasts and take-out dinners instead. While I stayed with them, I realized that they could still use a slow cooker (all they needed was a power outlet!) and started to wonder how many different types of recipes could be made in one, besides the stereotypical soup or chili.
I brainstormed a fairly long list, which actually lead to a Slow Cooker Week on my blog later that fall (including coffee cake, fruit crumble, upside down cake, and the best sticky buns!), and I’m finally getting around to posting another one of the recipes I wanted to test out…
Healthy 5-Ingredient Slow Cooker Granola! I know, it sounds a little strange… Granola in the slow cooker? But I’m going to show you exactly how to get big, crunchy clusters without an oven—and it’s probably a lot easier than you think!
HOW TO MAKE THE BEST HEALTHY SLOW COOKER GRANOLA
This simple granola recipe starts with the dry ingredients. I always use two different types of cereal in my granola: old-fashioned oats and crisp rice cereal. The former is fairly predictable, but the latter is my secret weapon to healthy granola! Crisp brown rice cereal adds a big crunch to your clusters for a fraction of the calories of oats or extra oil. This is the brand that I buy because it doesn’t have any refined sugar or funky ingredients.
Next come the wet ingredients: honey and egg whites. The honey adds the perfect amount of sweetness, and it even caramelizes a little while the granola cooks. Certain bits may darken so much that they look burnt, but that’s normal and simply the way the honey changes colors when exposed to heat.
The egg whites help bind together the clusters, and they give your granola a little protein boost, too! If you’re vegan, you can easily substitute pure maple syrup or agave in place of the honey and a few tablespoons of non-dairy milk in place of the egg whites. Mashed banana or applesauce may work as well, although I haven’t tried either of those substitutions myself.
Now for the secret trick to making granola in your slow cooker… You must leave the lid slightly vented the whole time! This method traps in most of the heat from the slow cooker to fully bake the granola, but it allows the moisture to escape, which is how the granola turns crisp and crunchy. (If you left the lid on and tightly sealed, the granola would stay soft and mushy!)
To vent, I simply turn the slow cooker lid a tiny bit after setting it down. You only need it to be offset by a little—enough to let the steam escape instead of condensing on the lid! A centimeter will be plenty.
Just like with regular granola recipes, you’ll toss the cereal every so often to move it around the pan and prevent it from burning. Be very gentle! The more your stir, the smaller the clusters will be. If you’re gentle with stirring, the clusters will be larger and stick together better.
Now all that’s left to do is sprinkle your favorite mix-ins on top! Dried cherries, dried blueberries, dried cranberries, dried mango, dried pineapple, raisins… Almonds, pecans, walnuts, peanuts, cashews… Toasted coconut, mini chocolate chips… The sky’s the limit!
How’s that for an easy and healthy breakfast? Or snack? Or dessert? Or… Well, you already read my story and know about my obsession! 😉 And when you make your own, remember to snap a picture and share it on Instagram using #amyshealthybaking and tagging @amyshealthybaking IN the photo itself! (That guarantees I’ll see your picture! 🙂 ) I’d love to see your healthy slow cooker granola!
| Healthy 5-Ingredient Slow Cooker Granola | | Print |
- 1 ½ cups (150g) old-fashioned oats (gluten-free if necessary)
- 2 cups (60g) crisp brown rice cereal
- 2 large egg whites, room temperature
- ¼ cup (60mL) honey
- ¼ - ½ cup mix-ins of choice*
- Lightly coat the inside of a 5-quart slow cooker with nonstick cooking spray. Line a large rimmed baking sheet with foil, and set aside.
- In a large bowl, combine the oats and rice cereal. In a separate bowl, whisk together the egg whites and honey. Pour the honey mixture over the cereal mixture, and toss with a spatula until all of the cereal is coated.
- Transfer the cereal mixture to the slow cooker. Place the lid on top, ensuring that it’s slightly askew to allow air and moisture to escape. (A centimeter or less is fine!) Cook the granola for 2 to 2 ½ hours on HIGH, or until crunchy, gently stirring every 45 minutes to prevent the granola closest to the edges from burning. Once the granola finishes reaches your desired crunchy texture, transfer it to the prepared baking sheet to cool completely before sprinkling with your mix-ins of choice.
Instant oats (also called quick cooking or one-minute oats, and gluten-free if necessary) may be substituted for the old-fashioned oats. Do not substitute steel-cut oats.
Regular crisp rice cereal (ie Rice Krispies) may be substituted for the brown rice cereal.
Pure maple syrup or agave may be substituted for the honey.
This is the 5-quart slow cooker that I used. A 6-quart slow cooker would work, but the cooking time may be slightly different.
Be very gentle when stirring the granola! Too much stirring will break up the clusters and result in lots of little pieces instead.
GLUTEN-FREE VERSION: Use certified gluten-free oats (old-fashioned or instant).
EGG-FREE + VEGAN VERSION: Substitute pure maple syrup or agave in place of the honey and 3-4 tablespoons of non-dairy milk in place of the egg whites.
REGULAR OVEN METHOD: Preheat the oven to 325°F, and line a rimmed baking sheet with a silicone baking mat (highly recommended!) or parchment paper. After mixing the ingredients together, spread the mixture evenly in a thin layer onto the prepared pan. Bake at 325°F for 20 minutes. Gently stir and move the clusters around the pan to break up the granola and prevent the bits closest to the edge from burning. Bake for an additional 10 minutes, then gently stir again. Bake for an additional 4-7 minutes (for a total of 34-37 minutes), or until the granola is deep brown and crunchy. Cool the granola completely to room temperature on the pan before transferring to an airtight container.
{gluten-free, dairy-free, egg-free option, vegan option, clean eating, low fat}
View Nutrition Information + Weight Watchers Points
















Healthy granola made easy in a slow-cooker?! I’m totally in!! I love granola but don’t often make it but this recipe is perfect! Thanks Amy!!!
– Madeline<3
I hope you enjoy the granola if you try it Madeline! 🙂
I have to keep my homemade granola in the pantry or I will literally eat the entire batch in one weekend! I also love the idea of granola in the slow cooker. Awesome idea!
You sound like my granola soulmate Melissa! 😉 So glad I’m not the only one with basically no self-control!
Excited to give this a try. Planning on making it this weekend.
I hope you enjoy the granola!
Wow – this looks so delicious!
Thank you!
Amy, I love this! Made mine in the oven and it turned out soooo delicious! I added in blueberry infused Craisins as my mixin. Love, love, love it! Keep the recipes coming!
I’m so glad you enjoyed the granola Katie! Those flavor-infused craisins are dangerous… I think the whole bag should count as one serving! 😉
Hi. I just made this granola recipe. I put it in the oven in a 8×8 Pyrex dish (glass) at 350. I ended up only leaving it in the oven for 40 minutes because it was burning. I was wondering if there was something that I might have done wrong or maybe I should have used a lower temperature. Also maybe used the convection bake. Any help would be great.
Thank you. ?
Oh my! Burnt granola doesn’t sound like fun; I’m sorry that happened to you Lorraine. I only use metal baking dishes in my baking recipes, and I’ve heard that glass ones generally require an oven temperature that’s around 25°F lower than what’s called for in a recipe. Also, some convection ovens need to be set 25°F below the regular recipe’s temperature as well to compensate for the fan, and your oven’s manual should tell you if this is the case for yours. Hopefully that helps and your next batch turns out better! 🙂
Hi, I have a 6 quart crock pot and noticed that your recipe calls for a 5 quart. Do you think I would have to adjust the time a lot? I’m new to how a crock pot works and I have no idea how to adjust the time. Any information would help, thank you!
I don’t think you’d have to adjust the time by too much Sandrea! My guess is that it’d only be shorter by half an hour, at most. This granola recipe is fairly forgiving, so just start checking for doneness/crunchiness after 1 ½ hours. I hope you enjoy the granola!
who knew it was even possible to make granola in a slow cooker? such a cool idea!
Thanks Thalia! 🙂
Hi ! how many cups/ounces are in one serving for this recipe ?
That’s included in the Nutrition Info, which is underneath the Notes section of the recipe. 🙂 I can’t wait to hear what you think of the granola Nikki!
Made this recipe today and it turned out great! I was so tired of eating the super-sweet, processed granolas sold in most stores, that I began searching for a recipe to make my own when i came across your wonderful website. It’s so nice to be able to choose the ingredients and level of sweetness in the granola. Can’t wait to try more of your recipes! Thank you!
I’m so glad you enjoyed the granola, and that means so much to me that you’re looking forward to trying more of my recipes. Thank you so much Amy! 🙂