Can You Use Baking Powder Instead Of Cornstarch

Let’s get real for a second: you’re staring into your pantry, a recipe half-finished on the counter, and you realize you’re out of cornstarch. Your brain short-circuits. You spot a box of baking powder. And a little voice whispers, “Can I use baking powder instead of cornstarch?” Friend, I am here to tell you that this is a fantastic question—one that leads us straight into the joyful chaos of kitchen science.

The short answer? No, you really shouldn’t.

I know, I know—that’s a bummer. But baking powder and cornstarch are like distant cousins who only look alike from across the room. Cornstarch is a pure starch, a gentle thickener for sauces, puddings, and gravies. Baking powder, on the other hand, is a chemical leavening agent packed with baking soda, an acid, and a little bit of cornstarch (yes, irony!) to keep it dry.

Imagine tossing a spoonful of baking powder into your gravy. Suddenly, your velvety sauce erupts into a frothy, fizzy mess. Not exactly the elegant dinner you planned, right? It’s a hilarious kitchen disaster waiting to happen—but probably not one you want to re-create on purpose.

Wait, so when can they be swapped?

Here’s where it gets fun. In a pinch, and only for coating foods for frying, baking powder can play a weirdly effective stand-in. The bubbles it creates when heated will give your chicken or onion rings an extra-crispy, puffy crust. It’s not exactly the same as cornstarch’s light, shatter-crunch, but it’s a wildcard trick that makes you feel like a mad scientist in an apron.

Just remember: do not try this in any sauce, pudding, or custard. Your beautiful lemon tart filling will turn into a lumpy, fizzy science experiment. Trust me, I’ve seen the look on a baker’s face when that happens—it’s equal parts confusion and horror, followed by laughter when you realize you’ve just created edible (if tragic) pop rocks.

Okay, but what if you really need a thickener?

Don’t panic! The universe of pantry swaps is way bigger than just cornstarch and baking powder. You’ve got all-purpose flour (use twice as much), arrowroot powder (my personal favorite for shiny sauces), or even instant mashed potato flakes for soups. Each one brings its own fun texture and personality to your dish.

And here’s a secret: cornstarch isn’t even the best thickener for everything. Want a glossy, clear fruit pie filling? Arrowroot wins. Need a hearty, slow-simmered stew? Regular flour makes it velvety. Baking powder, meanwhile, remains the champion of fluffy pancakes and tender biscuits—exactly where it belongs.

The real lesson here? Embrace the swap mentality.

Life is too short to run to the store for one missing ingredient. When you stand in your kitchen holding that box of baking powder and wondering if it can save the day, you’re actually doing something beautiful: you’re learning to trust your instincts. You’re improvising like a jazz musician. You’re saying, “I might fail, but I’ll learn something awesome.”

And let’s be honest, even if your sauce gets bubbly and weird, you’ll have a hilarious story to tell at dinner. “Remember when I tried to use baking powder as cornstarch?” That’s the kind of kitchen lore that makes cooking feel alive—messy, goofy, and full of surprises.

So, what’s the uplifting takeaway?

You absolutely can use baking powder instead of cornstarch—just not in the way you thought. The real magic isn’t in the perfect substitution; it’s in the curiosity that made you ask the question in the first place. Every mix-up is a tiny adventure, a chance to giggle at yourself and discover a new trick.

Next time you’re out of cornstarch, don’t sigh. Smile, grab that baking powder, and make something that surprises you. Maybe it’s impossibly crispy fried pickles. Maybe it’s a science fair volcano in a saucepot. Either way, you’re not just cooking—you’re playing. And that’s what makes food so wonderfully, deliciously fun.

Go on, get curious. The best recipes are born from the swaps that almost went wrong.