Side view of layered oatmeal jam bars on a pretty floral plate.
Baking, recipe

Use-What-You-Got Oatmeal Jam Bar Recipe

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oatmeal jam bars

We all have those jars in our fridge, right? The ones where you may not know what they are, or they keep getting pushed to the back because the kids decide they no longer want to eat them. My crew doesn’t like fig jam in other applications, but they can’t get enough of fig in this oatmeal jam bar recipe.

Mason jars of rolled oats and various flavors of jam sitting on the counter.

I love this recipe simply because it’s so versatile. You can use whatever flour fits your dietary needs, including gluten-free. Just pick your favourite gluten-free blend and go for it. This recipe does use butter, and I haven’t tested it myself with coconut oil, but I know others who have. However, it doesn’t have eggs so also fits that need if you have an allergy.

Oatmeal jam bars in a parchment-lined sheet pan.

It does make a MASSIVE batch – an entire half sheet pan. You might be telling yourself to halve the recipe, and the measurements ARE easy enough to do that. But I recommend just going for the entire batch at once since you already have dirty dishes. If you don’t have a half sheet pan, just split into two quarter sheets, though you may need to reduce the baking time so you don’t over brown them.

These bars freeze really well. I recommend cooling completely and slicing into bars before freezing. Then you could layer them with parchment in a container so you can thaw however many you need at once.

Side view of layered oatmeal jam bars on a pretty floral plate.
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5 from 14 votes

Oatmeal Jam Bars

These are a great catch-all dessert or snack. You can sneak any jam flavour languishing in your fridge into these delightful bars. They freez SUPER well and are easily made gluten-free.
Prep Time15 mins
Cook Time45 mins
Total Time1 hr
Course: Dessert
Cuisine: American
Servings: 24 bars
Calories: 475kcal


  • 4 cups flour all-purpose, whole wheat, gluten-free blend, etc.
  • 2 cups oats quick or rolled
  • 2 1/2 cups sugar
  • 1 tsp baking soda
  • 2 cups salted butter melted
  • 4-5 cups jam or fruit sauce see notes


  • Preheat oven to 350F
  • Mix flour, oats, sugar and baking soda together. Stir in the melted butter.
  • Scoop out 1 1/2 cups of the mixture and press the rest into a parchment lined half sheet pan (13”x18”).
  • Spread jam on the base. Sprinkle remaining mixture on top. Bake 45 minutes, cool before cutting.


Jam/fruit sauce options: use any jam, leftover cranberry sauce, apple sauce, mix dried fruit in with applesauce, mix multiple jams, use jams your family isn’t too keen on (my crew doesn’t love fig jam but loves fig jam bars!). The world is your oyster, just make sure it adds up to about 4-5 cups. You can even go halvsies when spreading your jam flavours.


Calories: 475kcal | Carbohydrates: 80g | Protein: 3g | Fat: 16g | Saturated Fat: 10g | Cholesterol: 41mg | Sodium: 207mg | Potassium: 95mg | Fiber: 2g | Sugar: 48g | Vitamin A: 473IU | Vitamin C: 5mg | Calcium: 23mg | Iron: 2mg
Cut out oatmeal jam bars on a floral saucer.

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29 thoughts on “Use-What-You-Got Oatmeal Jam Bar Recipe

  1. My sister and I made the. Utterly Almond Ring during her stay here at Thanksgiving and omggggg it was amazing! Your Recipes are always the easiest and oh so good that you share! Thank yiu

  2. I’ve been making these for years from a similar recipe—they’re my go-to for a gluten-free dessert (or breakfast!). Oat flour works great ?

  3. These bars are so good and super easy to make. The first time I made them they were gone before I had a chance to freeze any. Perfect way to use up the previous season’s jam, or a giant jar you couldn’t pass up at Costco. ?

  4. These bars are so good and super easy to make. The first time I made them they were gone before I had a chance to freeze any. Perfect way to use up the previous season’s jam, or a giant jar you couldn’t pass up at Costco. ?

  5. One of my favorites to use up half used jars of our homemade jam. So fun to split the pan in half or quarters so all family members get their favorite!

  6. I’ve been making this recipe from Kate for a couple years now and it is such a crowd pleaser!! So easy to make gluten and dairy free too! Making it an amazing dessert to have on hand or bring to an event, and have it be safe for everyone to enjoy!

  7. These are delicious! We used applesauce as the filling and the kids gobbled them up with eggs for breakfast. We’ll definitely be making them again. Thank you for sharing such an easy recipe!

  8. These are so good! I just happened to pull a quart of salted Carmel apple butter from the fridge a couple days ago to thaw. Now it is delicious oatmeal bars. So easy to make! Look forward to using the recipe to use up all the jam leftovers next time.

  9. I’ve made this a few times now. I love that it makes a big batch and I can freeze some to have for another day. I plan to make them next week as I had a friend who was sick and I last minute made them a meal to drop off but didn’t have time to make a dessert. So I am going to make sure I have some dessert in had to put with last minute meals.

  10. I made this a few days ago to use up some “blueberry butter” I had from spring 2019. It was awesome! I will definitely be making it again!

  11. I’ve just made them and don’t think they will make it to the freezer. I swapped butter for coconut oil and added some poppy and sesame seeds, it turned out great. They take very little time to make and make very few dishes, a keeper for sure!

  12. When I saw these bars and the recommendation that you use what jam you have on hand, I had to make them. They did not disappoint! So good and buttery. Feeds a crowd and freezes nicely. Everyone loved them!

  13. These are so good. Perfect way to use up my half jars of jam. These are a new family favorite. We’ll be making them often!

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