Buttery Jam Oat Bars

Featured in Sweet Endings: Irresistible Desserts.

Sweet oat bars with layers of raspberry jam and crumble on top. One dough for both crust and topping makes baking extra simple—and quick.
A chef holding a plate of food.
Updated on Sun, 13 Apr 2025 11:06:19 GMT
A light surface features a stack of raspberry-filled oat bars, garnished with fresh raspberries. Pin it
A light surface features a stack of raspberry-filled oat bars, garnished with fresh raspberries. | linacooks.com

I first threw these Raspberry Jam Oat Bars together when I needed to clear out my pantry's jam collection. Now they've become a family favorite in our home. The buttery, crumbly texture paired with that sweet jam center just hits the spot every time. Whenever I'm baking these, everyone wanders into the kitchen, drawn by the incredible aroma, asking how much longer till they can grab one.

What Makes These Treats Vanish Quickly

What I love most is how the same mixture works as both bottom and top layers. It's such a time-saver! No need to wait for butter to reach room temperature or dig out the electric mixer. Just melt, mix, and press. My kids can't get enough of those golden, buttery edges surrounding the sweet jam center that bursts with flavor in every single bite.

Your Shopping List

  • Jam: Any type works great but we usually go with raspberry or strawberry for that perfect tangy sweetness.
  • Rolled Oats: Stick with traditional old fashioned ones for the best texture. Don't try using quick oats as they'll fall apart.
  • Flour: All purpose is my standard choice though whole wheat can add some nutty goodness.
  • Butter: You'll need three quarters cup unsalted, completely melted.
  • Sugar: The brown variety gives these bars that amazing caramel-like flavor.
  • Egg: One large egg binds everything nicely.
  • Baking Powder: Just half a teaspoon does the trick.
  • Salt: A tiny amount to boost all other flavors.

Putting These Delights Together

Prepare Your Mixture
Start by melting butter in the microwave. Mix in brown sugar until it looks shiny then add your egg. Combine flour oats baking powder and salt until you get a nice crumbly consistency.
Form The Bottom Layer
Put parchment paper in your baking pan so you can easily remove the bars later. Push about half your mixture into the bottom and flatten it with a spoon.
Add The Sweet Stuff
Spread jam across the base layer. If it's too stiff heat it briefly to make spreading easier.
Finish With Crumbles
Scatter the remaining oat mixture on top of the jam. I always leave some spots uncovered so you can see the jam peeking through.
Bake To Perfection
Put in a 400°F oven until the top turns golden about 30 minutes. Let them cool fully before cutting.

My Clever Tips

I always give my jam a quick zap in the microwave for smoother spreading. Make sure to press that bottom layer down firmly. Waiting for them to cool is torture but totally necessary. Sometimes I can't stand waiting and pop them in the fridge to speed things up.

Perfect Serving Ideas

These pack well for school lunches and always get snatched up first at community bake sales. They're my go-to when friends drop by for coffee. Try serving them warm with a scoop of vanilla ice cream on top. The hot-cold combo is absolutely amazing.

Storage Secrets

They'll stay good on your counter in an airtight container for about 5 days. I usually make two batches and tuck some away in the freezer. Just wrap them properly and they'll keep frozen for up to 2 months. When you want some just let them thaw naturally on the counter.

A plate of raspberry oatmeal bars with scattered fresh raspberries around them. Pin it
A plate of raspberry oatmeal bars with scattered fresh raspberries around them. | linacooks.com

Fun Custom Variations

I switch things up with homemade apricot jam sometimes or even orange marmalade for a tangy twist. Tossing some chopped pecans into the topping gives them an awesome crunch. For fancy occasions I let them cool then drizzle melted white chocolate across the top.

Tools For Success

You'll want a good 8 inch baking pan metal works best for even heat. Don't skip the parchment paper it makes getting the bars out so much easier. Any bowl that's microwave safe will work for melting butter. My trusty wooden spoon handles everything from mixing to pressing. A decent cooling rack helps them cool all the way through.

Frequently Asked Questions

→ Why is cooling so important?
When cooled, the bars stay firm and cut cleaner. Speed things up by popping them in the fridge for 30 minutes after cooling down on the counter.
→ Can I use a different jam?
Sure! Just soften it a bit if it’s too thick, and you can spread it more easily on the base.
→ What’s wrong with quick oats?
They’re too fine and won’t give the same crispy texture as rolled oats, leaving the bars a bit heavy.
→ How long will these last?
Keep them in a sealed container in the fridge for up to 5 days. For the best bite, let them warm up to room temperature before eating.
→ Can nuts be added?
Absolutely! Toss in about 1/2 cup of chopped nuts to the mix for a crunchy addition.

Easy Jam Oat Bars

Soft and crumbly bars with raspberry jam sandwiched between a buttery oat crust and topping, all made from the same mix. Easy and convenient!

Prep Time
10 Minutes
Cook Time
30 Minutes
Total Time
40 Minutes
By: Paolina

Category: Desserts

Difficulty: Easy

Cuisine: Western

Yield: 16 Servings (16 squares)

Dietary: Vegetarian

Ingredients

01 1/2 cup tightly packed brown sugar.
02 Pinch of salt.
03 1 cup raspberry jam.
04 1 large egg (about 55-60g / 2 oz).
05 125g (1 stick) melted unsalted butter.
06 1 1/2 cups plain or all-purpose flour.
07 1/2 tsp of baking powder.
08 1 1/2 cups traditional rolled oats.

Instructions

Step 01

Heat your oven to 200°C/400°F. Line a 20cm/8" pan with parchment, leaving extra hanging over the edges, and give it a quick spray or grease.

Step 02

Combine the butter and brown sugar, then whisk in the egg. Mix in the flour, oats, baking powder, and a pinch of salt until blended.

Step 03

Press half the mixture (1 1/2 cups) into your prepared pan. Spread the jam over it, then scatter the leftover mixture on top.

Step 04

Pop it in the oven for 30-35 minutes until the top is a lovely, deep golden brown.

Step 05

Let it cool completely for around 2 hours. Use the parchment to lift it out of the pan, then slice into 16 equal-sized squares.

Notes

  1. Stick to traditional oats, no instant or quick-cooking ones.
  2. For a fun twist, you can toss in 1/2 cup of chopped nuts.
  3. Store in the fridge for up to 5 days.
  4. Let it warm up to room temperature before enjoying.

Tools You'll Need

  • 20cm/8" baking pan (metal).
  • Parchment paper.
  • A bowl for mixing.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains eggs.
  • Dairy product included.
  • Has wheat in it.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 216
  • Total Fat: 7.2 g
  • Total Carbohydrate: 35.8 g
  • Protein: 3 g