World’s Healthiest Blondies — a Dense, Fudgy Gluten-Free Recipe

By Jamie Hollis • 20 February, 2015

A blondie usually earns its place on the counter through butter and brown sugar, not through anything you’d call healthy.

This version flips that formula: almond flour instead of white flour, mashed banana and almond butter for moisture and fat, monk fruit sweetener standing in for sugar, and just enough sugar-free white chocolate and walnuts to keep every bite interesting.

The batter comes together in one bowl, the pan needs about 22 minutes in the oven, and the sixteen squares that come out the other side taste closer to a bakery treat than a compromise.

The texture leans dense and a little fudgy, which is typical of almond-flour baking and works in this recipe’s favor — blondies were never supposed to be light and airy anyway. The banana does most of the sweetening and binding work quietly in the background, so the monk fruit only has to top things off rather than carry the whole load.

Ingredients You’ll Need

Almond flour forms the base here, and it should be the finely ground blanched kind rather than almond meal, which bakes coarser and grainier. Two cups gives the blondies enough structure to hold together once cooled.

One ripe banana, mashed until smooth, adds natural sweetness and moisture — the riper the spots on the peel, the more flavor it contributes. Half a cup of almond butter should be a natural, no-sugar-added variety with a drippy consistency; a stiff, separated jar will make the batter harder to mix evenly.

Monk fruit sweetener, measured in the granulated form at half a cup, replaces the brown sugar a traditional blondie recipe would call for. One egg and a teaspoon of vanilla extract round out the wet ingredients, and half a teaspoon of baking soda gives the batter just enough lift.

For the mix-ins, a third of a cup each of sugar-free white chocolate chips and chopped walnuts adds contrast — the chocolate chips melt into soft pockets while the walnuts stay crunchy against the dense crumb.

Why This Version Skips the Usual Sugar and Flour

Standard blondie recipes lean on white flour for structure and a full cup or more of brown sugar for sweetness and that classic chewy crust. Both get swapped out here without changing what a blondie is supposed to taste like.

Almond flour is naturally gluten-free and brings its own nutty flavor that pairs well with the walnuts already in the batter, so nothing about the swap tastes like a substitution. Monk fruit sweetener measures cup-for-cup like sugar in most recipes, which keeps the math simple, and it doesn’t carry the aftertaste some sugar alternatives leave behind.

The mashed banana matters more than it might seem. It’s doing double duty as a sweetener and a moisture source, which lets the recipe use less almond butter than it otherwise would need for a soft texture.

The result lands at around 150 calories, 4 grams of protein, and 5 grams of sugar per blondie — most of that sugar coming from the banana and the trace amount in the white chocolate chips, not from anything added by the spoonful.

Storing Leftovers

Let the blondies cool completely in the pan before cutting — almond-flour bakes are soft while warm and firm up considerably as they sit, so cutting too early tends to leave ragged edges. Once sliced, an airtight container at room temperature keeps them fresh for about three days.

For longer storage, refrigerate for up to a week, or wrap individual squares in plastic and freeze for up to three months. Frozen blondies thaw on the counter in about twenty minutes, or can go straight into the microwave for ten to fifteen seconds if a warm, slightly gooey center is the goal.

Stacking the squares directly on top of each other in the container works fine once they’re fully cooled, though a layer of parchment between rows keeps the white chocolate chips from sticking to the blondie above if the kitchen runs warm.

Anyone freezing a full batch might cut the squares slightly smaller than usual, since a thawed blondie tends to taste denser than a fresh one and a smaller portion balances that out.