Making lentil flour at home takes about 20 minutes and requires nothing more than dry lentils and a blender or food processor. You start with whole dry lentils straight from the bag, grind them into a fine powder, and sift out any larger pieces. The result is a high-protein, naturally gluten-free flour you can use in flatbreads, pancakes, batters, and baked goods.
Choosing Your Lentils
Any variety of dry lentil works for flour. Red and yellow lentils produce the mildest, most neutral-tasting flour and break down easily because they’re already split. Green and brown lentils yield a slightly earthier, more robust flour that works well in savory recipes like socca, pakoras, or bread. French (Puy) lentils and black lentils grind fine too, though they tend to produce a darker flour with a stronger flavor.
Start with about 3 cups of dry lentils, which will yield roughly 3 cups of flour (the volume stays similar, but the weight stays the same). Use them uncooked, right out of the bag. There’s no need to soak them.
Getting the Lentils Completely Dry
Moisture is the enemy of good flour. Even the small amount of humidity lentils absorb during storage can make grinding harder and reduce shelf life. A quick oven toast solves this and also improves the flavor slightly, giving the flour a warmer, nuttier taste.
Spread your lentils in a single layer on a baking sheet and bake at 350°F (175°C) for 10 minutes. Give them a stir, then bake for an additional 5 minutes if they still feel at all tacky or cool to the touch. You’re not trying to cook them or brown them, just drive off residual moisture. Let them cool completely before grinding. Warm lentils can create steam inside your blender jar, which introduces the moisture you just removed.
Grinding Into Flour
You have a few options for the actual milling, and the equipment you use will affect the texture of your finished flour.
- High-speed blender (Vitamix, Blendtec): The most common home method. Blend in batches of about 1 cup at a time on the highest setting for 30 to 60 seconds. This produces usable flour, though it won’t be as uniformly fine as what you’d get from a dedicated mill. You’ll need to sift and possibly re-blend the coarser pieces.
- Dedicated grain mill: Electric stone mills produce noticeably finer, more consistent flour than blenders. They’re also adjustable, so you can dial in a coarser grind for something like lentil polenta or a superfine powder for delicate baking. The finer and more even the flour, the better it performs in recipes that need a good rise.
- Food processor or spice grinder: These work in a pinch but produce the coarsest results. A spice or coffee grinder handles small batches (a quarter cup at a time) and can get reasonably fine, but you’ll be sifting out more large pieces.
Regardless of your equipment, work in small batches. Overloading the jar means the blades can’t reach all the lentils evenly, and you’ll end up with a mix of fine powder and barely-cracked pieces.
Sifting for a Finer Texture
After grinding, pass the flour through a fine-mesh sieve. There will be larger chunks left behind, especially if you used a blender or food processor. You can toss those bigger pieces back into the blender for another round of grinding or save them as a coarse meal for thickening soups and stews.
If you’re using the flour for something like a roux, a batter coating, or a cake, this sifting step matters. Unsifted lentil flour can feel gritty in finished dishes. For rustic flatbreads or thick pancake batters, a slightly coarser texture is less noticeable and you can skip the extra pass.
Why Lentil Flour Is Worth Making
Lentil flour is one of the most nutrient-dense flours you can use. Per cup (roughly 200g of raw lentils ground), you’re getting approximately 90g of protein, 40g of fiber, and a significant amount of iron, around 28mg. For comparison, the same amount of all-purpose wheat flour contains about 13g of protein and almost no fiber. This makes lentil flour especially useful for anyone eating gluten-free or looking to increase protein intake without adding meat or dairy.
The flavor is mild enough to blend with other flours. A common approach is replacing 25 to 50 percent of the wheat flour in a recipe with lentil flour, which boosts nutrition without dramatically changing the taste or texture. In naturally gluten-free cuisines, particularly Indian and Ethiopian cooking, lentil flour is used on its own for items like papadums, dosas, and injera.
Storing Homemade Lentil Flour
Because lentil flour is a whole-food flour that retains the oils from the entire lentil, it can go rancid faster than refined white flour. Store it in an airtight container in a cool, dry place, and it will keep for up to six months. If you don’t bake often or made a large batch, transfer it to the freezer, where it will last indefinitely. Just let it come to room temperature before using it in a recipe so it doesn’t throw off your dough temperature.
Signs that your flour has turned: a musty or sour smell, a noticeably different color, or a bitter taste when you pinch a bit on your tongue. Fresh lentil flour should smell mildly earthy and clean, almost like dried beans. If anything seems off, it’s time to make a new batch.