WIC Pantry Help WIC Baking

WIC Oatmeal Banana Muffin Squares

Soft banana oat breakfast squares that use common pantry staples, bake in one pan, and hold up for breakfasts, snacks, and lunchboxes.

  • By Ruthann
  • Published March 16, 2026
  • Last reviewed March 16, 2026
  • Total time 43 min
  • Yield 12 squares
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These squares are built for the kind of week where breakfast needs to already be in the kitchen before the day starts pushing. The oats help them stay satisfying, the bananas keep the crumb tender, and the pan cut means you can portion them fast without standing over a muffin tin.

They are not meant to taste like a bakery cupcake. They are meant to taste warm, steady, and worth eating again tomorrow.

Recipe Rescue

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Get the safe cooling, storage, reheating, and carryover logic for leftovers built around bananas, oats, and milk.

Recipe details

Timing & yield

Prep
15 minutes
Cook / bake
28 minutes
Total
43 minutes
Yield
12 squares

Ingredients

Dry ingredients

  • 2 cups old-fashioned oats
  • 2 cups all-purpose flour
  • 3/4 cup brown sugar
  • 2 teaspoons baking powder
  • 1 teaspoon baking soda
  • 1 1/2 teaspoons cinnamon
  • 1 teaspoon kosher salt

Wet ingredients

  • 3 very ripe bananas, mashed
  • 2 large eggs
  • 1 1/2 cups milk
  • 1/2 cup vegetable oil
  • 2 teaspoons vanilla extract
  • 1/2 cup raisins

Method

  1. Step 1. Heat the oven to 350 degrees Fahrenheit and grease a 9x13 baking dish so the squares release cleanly once cooled.
  2. Step 2. In a large bowl, whisk together the oats, flour, brown sugar, baking powder, baking soda, cinnamon, and salt until the leavening is evenly distributed.
  3. Step 3. In a second bowl, whisk the bananas, eggs, milk, oil, and vanilla until the bananas are mostly smooth and the mixture looks fully blended.
  4. Step 4. Pour the wet mixture into the dry ingredients, fold just until no dry flour pockets remain, then stir in the raisins.
  5. Step 5. Spread the batter evenly in the pan and smooth the top into the corners so the center and edges bake at the same pace.
  6. Step 6. Bake for 26 to 30 minutes, until the center springs back lightly and a tester in the middle comes out with moist crumbs instead of wet batter.
  7. Step 7. Cool in the pan for 15 minutes before cutting so the squares hold together instead of crumbling apart hot.

Equipment

  • mixing bowls
  • whisk
  • 9x13 baking dish

Storage & safety

Store covered at room temperature for 1 day or refrigerate for up to 4 days. For longer holding, freeze the cut squares and thaw as needed.

Troubleshooting

The squares baked up heavy
The batter was likely overmixed. Warm a square slightly before serving to soften it, and mix the next batch only until the flour disappears.
The center stayed damp
Return the pan to the oven for a few more minutes and tent loosely with foil if the edges are already well colored.

Recipe rescue notes

The bananas were not sweet enough and the pan tastes flat

Likely cause: The fruit was not fully ripe, so the batter lost both sweetness and aroma.

Fix: Serve the squares warm with a thin swipe of peanut butter or a spoonful of yogurt to bring back richness and flavor.

Next time: Use heavily speckled bananas so the batter gets full banana sweetness without needing more sugar.

Substitutions

Raisins
Use diced apple or chopped dates. — If you use fresh apple, keep the pieces small so they soften before the batter overbakes.

Carryover / Next Meal Ideas

Breakfast parfait cups

Crumble a square into a bowl or jar with yogurt and fruit for a fast second-day breakfast that still feels like something put together on purpose.

  • If the squares have dried slightly in the refrigerator, warm them for a few seconds before crumbling.

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