Unbelievable Bean Brownies

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Here is the pitch: a fudgy brownie built on a can of black beans, with no flour of any kind. Not gluten-free flour. No flour. The beans do the job flour usually does, which sounds like a prank and reads like a health blog fever dream. Naturally gluten free, high in fibre, and resting entirely on one question: can anyone tell?

I adapted the idea from the black bean brownies at Live Eat Learn, then changed the method to a wet-into-dry build, used the baking staples already in my kitchen, and finished them with Reese's Pieces, the candy I verified gluten free three different ways in Guide #1. The chocolate chips are Hershey's Chipits, which carry a gluten-free label right on the bag. Every ingredient in this recipe passed a label check before it passed my lips.

Ingredients

• 1 can (540 mL) black beans, drained and rinsed well (mine were Unico)
• 3 eggs
• 3 Tbsp neutral oil
• 1 tsp vanilla
• 1/4 cup cocoa (mine was Fry's)
• 2/3 cup sugar
• 1/2 tsp baking powder
• 1/4 tsp salt
• 1/2 cup chocolate chips, labelled gluten free (mine were Hershey's Chipits, milk chocolate)
• 1 small bag (51 g) Reese's Pieces, for the top

Makes 12 brownies in an 8 or 9 inch square pan.

Method

1. Heat the oven and line the pan

350°F (175°C). Line a square pan with parchment, leaving overhang on the sides so the slab lifts straight out later.

2. Rinse the beans like you mean it

Drain the can and rinse the beans under running water until it runs clear. This is not a fussy step for its own sake. The canning liquid is where the beany flavour lives, and washing it off is half of why nobody tastes beans in the finished brownie.

3. Blend the wet ingredients until completely smooth

Beans, eggs, oil, and vanilla into a food processor. Blend, stop, scrape the sides down, blend again. You are done when there is not a single bean fragment left, just a smooth, pale puree. Chunky puree means beany brownies. This step decides the recipe.

4. Mix the dry, then combine

In a separate bowl: cocoa, sugar, baking powder, salt. Pour the puree in and fold until the batter turns a uniform, glossy chocolate brown. It will look exactly like brownie batter, because it is.

5. Chips in, into the pan

Fold in the chocolate chips, scrape the batter into the lined pan, and smooth the top.

6. Bake, top, bake again

Bake 15 minutes, until the surface has set. Pull the pan out, scatter the Reese's Pieces over the top, and press them in very lightly. Back in the oven for about 15 more minutes, until the edges look set and the centre has just lost its shine. Total bake, about 30 minutes.

Why not put the Pieces on at the start? Candy shells that spend a full bake on top tend to sink or split. At the halfway mark the surface is firm enough to hold them, and they set into the top like they were always meant to be there. The shells came through with their colour and their crunch intact.

7. Cool before you cut. (I didn't.)

Full disclosure, the fresh pan worried me. My exact words were: "Those cracks don't give me a ton of confidence that these won't be a crumbly mess, but I'm trusting the process and waiting for them to cool." Flourless bakes finish setting as they cool, so the instruction is to let the pan cool completely before slicing. I lasted most of the way. They were still slightly warm when the knife went in, and they held together beautifully anyway. The cracks are only skin deep: a thin, set top over a dense middle.

The verdict

First, the headline: there is basically zero bean taste and zero bean texture. None. If I served these without the origin story, nobody at the table would guess, and I include people who love guessing. They are soft and gooey, with pockets of melted chocolate chip throughout, and the Reese's on top earn their place: crunchy shells and a hint of peanut butter alongside the chocolate.

Dense is a good description, and I mean it in the best way. These are not cakey, not light, not airy. They are dense the way a good fudge brownie is dense, and the cross-section proves it.

Now the flaw, because there is one. As you chew, they get a bit pasty in your mouth. Not beany, not gritty. Pasty. It is subtle and it is the only tell, but once you notice it you cannot un-notice it, and it is the difference between a great brownie and a great story about a brownie.

Overall this was a fun experiment, and these are surely much healthier than traditional brownies. But if I am choosing, I would choose regular brownies made with gluten-free flour over these. The bean version wins on paper. The flour version wins in my mouth. On my own site, the mouth gets the final say.

Household split decision: the resident cookie thief, the same critic who ate the Walker's shortbread before it could be judged in Review #1, cast a make-again vote in favour. So maybe I am just too picky. The official verdict stands, but the dissent is noted for the record.

Who should make these? Anyone feeding a crowd with mixed dietary needs, anyone who wants the fibre and protein story, and anyone whose household cannot do flour substitutes for other reasons. They are genuinely good. They are just not the brownie I will reach for when the choice is mine, and this site exists to tell you exactly that kind of truth.

Adapted from the black bean brownie concept at Live Eat Learn. Method, topping technique, and verdict are my own. Label checks: Is Reese's Pieces Gluten Free?

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