Overnight Slow Cooker Maple Oatmeal with Berries and Nuts

Published: March 30, 2026
Gloria MorganGloria Morgan
Tags: Breakfast, Comfort Food, Vegetarian, Slow Cooker, Make-Ahead

Maple Oatmeal

Hands-off creamy overnight oatmeal from your slow cooker—ready for a warm breakfast with berries and nuts.

Prep Time:10 minCook Time:480 minTotal Time:490 minServings:6Difficulty:Easy

Nutrition (per serving)

Calories:320 kcal
Protein:10 g
Carbs:56 g
Fat:9 g

This slow cooker maple oatmeal is the kind of breakfast that feels like a hug in a bowl. Toss everything in the crock before bed, wake to fragrant, spoonable oats studded with berries and crunchy toasted nuts—no early-morning fuss required. The maple and brown sugar give just the right kind of sweet while vanilla and cinnamon add warmth.

It’s incredibly forgiving: use dairy or a plant milk, swap berries for apples or pears, or add a scoop of protein powder in the morning. I love serving it with extra nuts and a scoop of yogurt for creaminess and texture—perfect for busy mornings or relaxed weekend brunches alike.

Ingredients

  • Old-fashioned rolled oats:3 cups
  • Whole milk (or milk of choice):4 cups
  • Water:1 cup
  • Pure maple syrup:1/3 cup
  • Light brown sugar:2 tbsp
  • Vanilla extract:2 tsp
  • Ground cinnamon:1 tsp
  • Kosher salt:1/2 tsp
  • Mixed berries (fresh or frozen):2 cups
  • Toasted chopped pecans:1 cup
  • Unsalted butter (optional):2 tbsp
  • Greek yogurt (for serving, optional):1 cup
  • Ground flaxseed (optional):2 tbsp

Instructions

  1. Lightly grease the inside of a 6- to 7-quart slow cooker with nonstick spray or a little butter.

    Butter greasing the inside of a slow cooker crock
  2. In a large bowl, stir together the rolled oats, milk, water, maple syrup, brown sugar, vanilla, cinnamon, and salt until evenly combined.

    Oats and milk being stirred with cinnamon and maple syrup
  3. Pour the oat mixture into the slow cooker and gently spread the mixed berries over the top; do not stir them fully in—this gives nice pockets of fruit.

    Mixed berries scattered over the oat mixture in a slow cooker
  4. Cover and cook on LOW for 7 to 8 hours (or up to 9 hours if you prefer a very soft texture). Avoid opening the lid while it cooks.

    Covered slow cooker with oatmeal and berries cooking inside
  5. In the morning, remove the lid and stir the oatmeal to combine any separated liquid. If it’s thicker than you like, stir in a splash of milk to loosen the texture.

    Cooked berry oatmeal being stirred in the slow cooker
  6. Stir in the butter, if using, and fold in half of the toasted pecans to give the oats a little crunch throughout.

    Pecans and melting butter folded into slow cooker oatmeal
  7. Taste and adjust sweetness with more maple syrup or brown sugar if desired. Spoon into bowls and top with remaining pecans and a dollop of Greek yogurt.

    Maple syrup drizzled over oatmeal with berries, pecans, and yogurt
  8. Store leftovers in an airtight container in the refrigerator for up to 4 days; reheat with a splash of milk on the stove or in the microwave.

    Leftover berry oatmeal packed in a glass storage container

Tips & Notes

  • Use old-fashioned rolled oats—not instant or steel-cut—for the best overnight slow-cooker texture.
  • If you worry about sticking, place a slow-cooker liner in the crock or grease thoroughly before adding ingredients.
  • Frozen berries work great and add color; if using very juicy fruit, you may want to reduce the water by 1/4 cup.
  • For a dairy-free version, swap in unsweetened almond or oat milk and skip the butter; maple syrup keeps the flavor rich.