5 Life-Changing Baked Oatmeal Muffins That Will Make Your Mornings WAY Easier

Want to know how to make the best baked oatmeal muffins that actually taste good and keep you full? These life-changing baked oatmeal muffins are the ultimate breakfast hack you need to try.

Mornings can get so chaotic, and it’s way too easy to just grab a sugary granola bar or skip breakfast entirely. That’s why I became completely obsessed with meal-prepping these muffins. They take less than 30 minutes to throw together, they’re packed with wholesome ingredients, and they genuinely taste like dessert for breakfast.

Whether you need a quick, healthy grab-and-go meal for a busy workday or something easy to prep for the week ahead, these are about to become your new go-to.

This post is all about how to make the best baked oatmeal muffins.

Why This is the Absolute Best Oatmeal Muffin Recipe

Before we look at the ingredients, we have to talk about the pastry science that makes this oatmeal muffin recipe entirely foolproof. If you’ve ever had an oatmeal muffin that turned out dense, gummy, or dry, it’s probably because of how it was mixed. Here is exactly why this specific recipe works so much better:

• Instead of throwing everything into one bowl, we first soak our rolled oats in warm buttermilk and melted butter. This completely hydrates the oats, preventing any gritty texture and ensuring an incredibly moist crumb.
• Instead of choosing between just oil and just butter, we use both. Melted butter gives you that unyielding rich flavor, while a touch of neutral oil guarantees your baked oat muffins stay incredibly soft for days.
• We use a mix of baking powder and baking soda to react with the acid in the buttermilk. This creates maximum lift so your muffins don’t turn out flat.
• We start baking at 425°F for the first 5 minutes for a rapid steam release, which gives you those tall bakery-style high domes. Then, we drop it to 350°F to let the centers cook without being too dry.

The Ingredients You’ll Need

• 1 1/2 cups (135g) Old-fashioned rolled oats (Make sure to use rolled oats here! Quick oats or instant oats will turn to total mush during the soak).
• 1 cup (227g) Full-fat buttermilk
• 4 tbsp (57g) Unsalted butter, melted and cooled slightly
• 2 tbsp (26g) Neutral oil (avocado, canola, or vegetable)

The Wet Ingredients

• 2 large Eggs (room temperature)
• 2/3 cup (140g) Dark brown sugar, packed (Dark brown sugar adds a much deeper molasses flavor than light brown sugar).
• 1 1/2 tsp Pure vanilla extract

The Dry Ingredients

• 1/4 cups (150g) All-purpose flour (unbleached preferred)
• 1 1/2 tsp Baking powder
• 1/2 tsp Baking soda
• 1 tsp Ground cinnamon
• 1/4 tsp Freshly grated nutmeg
• 1/2 tsp Fine sea salt

Optional

• 2 tbsp rolled oats (for sprinkling)
• 1 tbsp Coarse sparkling sugar or Demerara sugar (for that crunchy bakery crust)

How to Make the Best Baked Oatmeal Muffins

1.

In a large mixing bowl, stir together your rolled oats, buttermilk, melted butter, and neutral oil. Set the bowl aside at room temperature for 20 minutes. Don’t skip this! The oats need this exact time to absorb the liquid and turn into a thick, creamy base. It’s the secret to making these the absolute best healthy oatmeal cups for your morning routine.

2.

While your oats are soaking, preheat your oven to 425°F (218°C). Line a standard 12-cup muffin tin with paper liners, or spray the cups generously with a floured baking spray.

3.

First, grab a separate medium bowl and whisk together your all-purpose flour, baking powder, baking soda, cinnamon, nutmeg, and sea salt.

Once your oats have finished their 20-minute soak, whisk the dark brown sugar, room-temperature eggs, and vanilla extract into the wet oat mixture until smooth.

Pour your dry flour mixture into the wet oat bowl. Using a rubber spatula, fold the ingredients together just until the flour streaks disappear (it should only take about 10-12 folds). Make sure you don’t overmix here, or your breakfast oatmeal muffins will develop a tough, rubbery texture.

4.

Divide your batter evenly among the 12 muffin cups. You want to fill them almost all the way to the top (about 7/8 full). Filling them high is necessary if you want those gorgeous, high bakery domes! Sprinkle the tops evenly with your extra pinch of rolled oats and a generous dusting of coarse sparkling sugar.

5.

Place your muffin tin on the middle rack of your oven and bake at 425°F (218°C) for exactly 5 minutes.

Without opening the oven door, immediately reduce the temperature to 350°F (177°C) and bake for an additional 13 to 15 minutes.

They are completely done when the centers bounce back gently when you press them, or when a toothpick inserted into the center comes out clean with just a few moist crumbs.

6.

Let the muffins rest for about 5 minutes. Then, transfer them over to a cooling rack. These taste absolutely incredible served warm with a slice of salted butter!

Simple Tips for Storing and Meal Prepping

Because of our oat soaking step and the butter/oil combination, these baked oatmeal cups stay soft and fresh. If you love having oatmeal breakfast muffins ready to go for busy workdays, these are the ultimate solution.

Place them in an airtight container for up to 3 days. Place a piece of paper towel at the bottom of the container to absorb any excess moisture so the tops stay perfect.

OR

Let them cool completely, wrap them up, and freeze them for up to 2 months. When you’re ready to eat, just pop one in the microwave for about 20-30 seconds for a quick, warm breakfast.

This post was all about how to make the best baked oatmeal muffins so you can have an easy, healthy breakfast ready for busy mornings.