Hot Chocolate Baked Protein Oats

There was a time when the only thing I ate for breakfast was oats. They were cheap, filling, and reliable — but if I’m honest, they weren’t always exciting. Discovering baked oats completely changed that for me.

Baked protein oats are still nourishing and balanced, but they feel indulgent. Almost like dessert for breakfast. These hot chocolate baked protein oats are one of my favourite versions — rich, chocolatey, comforting, and perfect if you’re starting meal prep and want something sustainable for weight loss (of course, paired with movement and enough overall food).

From a nutrition coaching perspective, this recipe is built to keep you full and satisfied: slow-digesting oats, added protein, and enough volume to prevent that mid-morning snack hunt. It’s a great example of how weight loss meal prep recipes don’t need to feel restrictive or boring.

Ingredients

Base

• 360 ml plant-based milk
  Soy, oat, or almond all work well
• ¾ tsp apple cider vinegar
  Creates a dairy-free “buttermilk” for a softer bake
• 300 g plant-based yoghurt
  (200 g original + 100 g replacing bananas)
  Sub: thick soy yoghurt works best
• 110 g rolled oats
• 75 g oat flour
  Sub: blend rolled oats until flour-like
• 45 g plant-based chocolate protein powder
  Sub: plain protein + extra cocoa + sweetener
• 1 tsp baking powder
• 35–40 g dark cocoa powder

Hot Chocolate Soak

• 2 tbsp cocoa powder (40–50 g)
• 2 tbsp maple syrup (adjust to taste)
• 150 ml hot plant-based milk

Topping

• 75 g plant-based mini marshmallows
  Add just before serving for best texture

Step-by-Step Method

1. Make the plant-based “buttermilk”

Mix the plant-based milk with apple cider vinegar and set aside for 10 minutes.

Coach tip:
This improves texture and lift, especially in baked oats no banana recipes.

2. Mix the base

In an 8-inch square baking dish, combine:

• Plant-based yoghurt
• Rolled oats
• Oat flour
• Chocolate protein powder
• Cocoa powder
• Baking powder

Pour in the milk mixture and stir until a thick batter forms.

Coach tip:
A thicker batter = fudgier centre. If it looks pourable, add 1–2 tbsp oat flour.

3. Bake

• Oven: 170°C for 30–40 minutes
• Air fryer: 180°C for 25 minutes

Bake until risen and just set in the middle.

Coach tip:
Slightly underbaking keeps these more like chocolate protein baked oats rather than cake.

4. Add the hot chocolate soak

While warm, poke holes all over the oats using a skewer or fork.
Whisk the soak ingredients and pour evenly over the bake.
Allow to cool fully so it absorbs.

Coach tip:
This step is what gives “choc baked oats” that gooey brownie-like texture.

5. Add marshmallows

Reheat a portion for 20–30 seconds, then top with marshmallows so they soften.

Tips and Variations

• Let the bake cool fully before slicing — it sets as it cools
• Store marshmallows separately for meal prep
• For extra richness, add a handful of chocolate chips baked oats-style into the batter
• Chocolate chip baked oats: Fold 40 g dark chocolate chips into the batter
• Brownie baked oats: Add 1 tbsp nut butter and reduce oat flour slightly
• Baked oats no banana: This recipe already is
• Lower-calorie version: Reduce marshmallows and sweetener
• Higher-protein version: Add an extra 10 g protein powder + splash of milk

Storage, Serving & Reheating

• Fridge: Store sliced portions in an airtight container for up to 5 days
• Freezer: Freeze individual portions for up to 2 months
• Reheat: Microwave 30–60 seconds until warm
• Serve with: Extra yoghurt, berries, or nut butter

Some Useful products I have found for this recipe:

This Dual Air Fryer by Swan is my go to for any recipe that requires that extra level of crispeness.