Crock Pot Blueberry Oat Casserole
This post may contain paid links. If you make a purchase through links on our site, we may earn a commission.
This Crock Pot Blueberry Oat Casserole is a delicious breakfast that is made from scratch while still being easy to make.
Note: We use referral links for the products we love.
How to Make Blueberry Oat Casserole in a Crock Pot
Aunt Lou here.
I was making my daughter some old fashioned oats the other day for breakfast and saw a recipe for some yummy muffins on the canister. I thought it sounded great and wanted to try to make it into a casserole in my crock pot instead of muffins. Now you have this Crock Pot Blueberry Oat Casserole recipe. It was an instant favorite around here. My son, who is not a fan of blueberries, absolutely loves this casserole. He asked for seconds as soon as he finished his first piece. I’m counting it as a win!
I made this in my casserole crock pot, and it did pretty well. There are many recipes that are made in a casserole crock pot that can be made in a 6 quart slow cooker. However, I would not suggest that with this recipe. It would be quite a bit thicker in a 6 quart, so the sides would burn before the center set. However, in the casserole crock pot, it all sets up nicely.
What You Will Need for Crock Pot Blueberry Oat Casserole
Ingredients Needed for Casserole
- 1 cup old fashioned oats
- 1 1/4 cup all purpose flour
- 3/4 cup sugar
- 1 teaspoon baking powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 teaspoon ground cinnamon
- 1 cup milk
- 1/4 cup unsalted butter, melted
- 2 large eggs
- 2 tablespoons maple syrup
- 1 teaspoon vanilla extract
- 1 1/2 cups fresh blueberries
Ingredients Needed for Topping
- 1/4 cup all purpose flour
- 1/2 cup packed brown sugar
- 1/4 cups old fashioned oats
- 1/4 cup unsalted butter, melted
- 1 teaspoon vanilla extract
- 1/4 teaspoon salt
Equipment Needed
- 2 Medium mixing bowls
- Large mixing bowl
- Measuring cups
- Measuring spoons
- Stirring spatulas
- Whisk
- Butter knife
- Small microwaveable bowl or coffee cup
- Fork
- Paper towels, a flour sack towel or tea towel
- Casserole Crock Pot
Time Needed
- Prep Time: 15
- Cooking Time: 1 hour and 15-30 minutes on high with an additional 30 minutes on low, rotating your insert halfway through the cooking time so everything can cook evenly
General Notes
- Looking for more recipes? Ourย Recipe Finderย can help you find exactly what you need.
- As with any of our recipes, carb counts, calorie counts and nutritional information varies greatly. As a result, your nutritional content depends on which products you choose to use when cooking this dish. The auto-calculation is just an automated estimate and should NOT be used for specific dietary needs.
- All slow cookers cook differently, so cooking times are always a basic guideline. Recipes should always be tested first in your own slow cooker and time adjusted as needed.
LOVE THIS SITE?
If Recipes That Crock has helped you and you would like to give us a small tip of gratitude, here is our tip jar.
Your financial support is never expected but always appreciated! Folks like you help us keep doing what we do!
SAVE THESE RECIPES TO YOUR FREE RECIPE BOX
On Recipes That Crock we have a way for you to save recipes, menus and collections toย your own free recipe box.ย This way you wonโt ever lose a recipe, menu or collection. With your free RTC account, you know that your favorite recipes and all the recipes you want to try are always just a click away.
Click Here to: Learn how to use your Recipe Box on this site.
Click Here to: Learn how to create your own meal plan on this site.
You can register (or login if you already a user) here: Register/Login Here.
NOTE: If you don’t see the recipe box save buttons, you need to sign in.

Crock Pot Blueberry Oat Casserole
Ingredients
Casserole Ingredients
- 1 cup old fashioned oats
- 1 1/4 cup all purpose flour
- 3/4 cup sugar
- 1 teaspoon Baking Powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 teaspoon ground cinnamon
- 1 cup milk
- 1/4 cup unsalted butter melted
- 2 large eggs
- 2 tablespoons maple syrup
- 1 teaspoon vanilla extract
- 1 1/2 cups Fresh Blueberries
Topping Ingredients
- 1/4 cup all purpose flour
- 1/2 cup packed brown sugar
- 1/4 cup old fashioned oats
- 1/4 cup unsalted butter melted and cooled
- 1 teaspoon vanilla extract
- 1/4 teaspoon salt
Instructions
- In a medium mixing bowl, mix together 1 cup old fashioned oats, 1 1/4 cup all purpose flour, 3/4 cup sugar, 1 teaspoon Baking Powder, 1 teaspoon baking soda, 1/2 teaspoon salt and 1 teaspoon ground cinnamon. Set aside.
- In a large mixing bowl, beat 2 large eggs and add in 1 cup milk, 1/4 cup unsalted butter (melted), 2 tablespoons maple syrup and 1 teaspoon vanilla extract. Stir until well combined.
- Stir in the dry mixture to the wet mixture 1 cup at a time until completely combined, making sure to not over mix.
- Gently fold in 1 1/2 cups Fresh Blueberries.
- Pour the casserole mixture into a lightly greased casserole crock pot.
- Melt 1/4 cup unsalted butter and place in the refrigerator to cool for at least 5-7 minutes.
- In a medium mixing bowl, combine 1/4 cup all purpose flour, 1/2 cup packed brown sugar, 1/4 cup old fashioned oats, 1 teaspoon vanilla extract, 1/4 teaspoon salt and the cooled melted butter until well combined.
- Evenly distribute the topping across the top of the casserole.
- Place paper towels, a flour sack cloth towel or tea towel tightly under the lid so the condensation on the lid won't drip on the casserole. Make sure it is tight so it doesn't dip down and touch the casserole.
- Cook for 1 hour and 15-30 minutes on high before lowering the temperature to low for an additional 30 minutes. It is done when the edges are golden and the center is set.
Notes
- Looking for more recipes? Ourย Recipe Finderย can help you find exactly what you need.
- Check out all our favorite recommendations for cookbooks,ย slowย cookers and low carb essentials in ourย Amazon Influencer Shop.
- As with any of our recipes, carb counts, calorie counts and nutritional information varies greatly. As a result, your nutritional content depends on which products you choose to use when cooking this dish.ย The auto-calculation is just an automated estimate and should NOT be used for specific dietary needs.
- All slow cookers cook differently, so cooking times are always a basic guideline. Recipes shouldย always be tested first in your own slow cooker and time adjusted as needed.
Nutrition
If you enjoyed this recipe, you might also enjoy these dishes
- Saucy Crock Pot Chicken and Rice for Two - February 5, 2026
- Crock Pot Cheesy Potato Soup for Two - January 22, 2026
- Crock Pot Taco Hash Browns for Two - January 21, 2026








Wondering what size casserole crockpot you used? They seem to come in many sizes!
I used the original 3.5 quart casserole crock, not the small/mini. Enjoy!
We love this! I used 2 cups of oats and left out the cream of wheat and used Splenda brown sugar instead of regular. I made it the first time with blueberries, then tried it with drained chopped, canned peaches, another time strawberries chopped up, another time I peeled and cooked apples and made it with apples, also blueberries & strawberries mixed. I’ve also tossed in a few bananas that were turning. This is one of our favorites!