When the weather turns crisp and the evenings call for something cozy yet figure-friendly, these Spicy Black Bean Stuffed Peppers land on our table at least twice a month. I first threw them together on a harried Wednesday when the fridge held little more than a bag of bell peppers, a can of black beans, and the dregs of a jar of chipotle peppers in adobo. What emerged from the oven 35 minutes later was so vibrant, so unexpectedly satisfying, that my bean-skeptic husband went back for seconds and my seven-year-old asked if we could have “those pepper boats” every week. Since then, I’ve refined the filling to amplify protein while keeping carbs in check, swapped in smoky spices for the usual taco seasoning, and landed on a final formula that tastes indulgent but clocks in at just 12 g net carbs per pepper half. Whether you’re feeding a keto-curious crowd, meal-prepping for Meatless Monday, or simply craving a meat-free dinner that doesn’t feel like a compromise, these peppers deliver big, bold flavor without the post-meal slump.

Why This Recipe Works

Low-carb, not low-flavor: By folding riced cauliflower into the black-bean base, we slash carbs while keeping the hearty texture you crave.
Double protein punch: Black beans plus a scoop of plant-based protein powder (or cottage cheese if you do dairy) keep you full for hours.
One pan, zero fuss: Everything bakes in the same dish—no pre-cooking grains or dirty extra skillets.
Meal-prep superstar: Assemble on Sunday, bake on demand; they reheat like a dream for up to five days.
Customizable heat: Dial the chipotle up or down so everyone from toddlers to fire-breathers stays happy.
Color wheel of nutrients: Using a mix of red, yellow, and green peppers means a broader spectrum of antioxidants on your plate.

Ingredients You'll Need

Each component here earns its keep. Read on for what to look for at the store—and what you can swap in a pinch.

Bell peppers: Choose specimens with flat bottoms so they stand upright in the baking dish. Any color works; I love a 50/50 blend of red and yellow for sweetness. Aim for peppers roughly the size of your fist; giant ones can hold so much filling that the carb count creeps up.
Black beans: Canned are fine—rinse them well to remove 40 % of the sodium. If you’re strictly keto, swap in 1½ cups cooked black soybeans for 2 g net carbs per half-cup versus 13 g.
Cauliflower rice: Buy pre-riced to save time, or blitz florets in the food processor until they resemble coarse couscous. Frozen works; just thaw and squeeze out excess water so the filling doesn’t get soggy.
Chipotle peppers in adobo: One pepper plus 1 teaspoon of the sauce lends gentle heat and that coveted smoky backbone. Freeze the remaining peppers flat in a zip bag; you’ll thank me next taco night.
Colby-Jack or pepper-jack: The mild meltability keeps the focus on the veggies. For dairy-free, try a sprinkling of nutritional yeast instead.
Egg: Acts as the binder so the filling slices cleanly rather than tumbling out of the pepper boats.
Spice lineup: Ground cumin, smoked paprika, and a whisper of cinnamon echo Mexican chorizo without the grease. Fresh cilantro stems (yes, the stems!) brighten the mix without wilting during baking.

How to Make Spicy Black Bean Stuffed Peppers for Low-Carb Dinner

Heat the oven & prep the dish

Position a rack in the center of your oven and preheat to 400 °F (204 °C). Lightly brush a 9×13-inch ceramic or glass baking dish with avocado oil; this prevents sticking and helps the peppers blister beautifully.

Trim & de-rib the peppers

Slice each pepper in half lengthwise straight through the stem. Use a small paring knife to remove seeds and pale membranes—those ribs are bitter. Keep the stem attached; it acts as a natural cup handle and looks gorgeous on the plate.

Par-roast for tenderness

Arrange halves cut-side-up in the dish. Brush with olive oil, sprinkle with salt and pepper, and bake for 10 minutes. This jump-starts the cooking so the finished peppers are fork-tender rather than al-dente.

Build the filling

In a large bowl, mash 1 cup of the black beans with a potato masher until mostly smooth; this creates a creamy glue that holds everything together. Fold in the remaining whole beans, cauliflower rice, chipotle, scallions, cilantro stems, spices, and ½ cup of the shredded cheese. Taste and adjust salt—the mixture should be boldly seasoned since the peppers will mellow it.

Add the binder

Beat the egg in a small bowl, then stir it into the filling until fully incorporated. The mixture will look moist but not soupy; if you picked watery cauliflower rice, blot with a clean tea towel.

Stuff generously

Remove the dish from the oven (use mitts!). The peppers should be pliable and fragrant. Divide the filling among the halves, mounding it high—about ½ cup per shell. Don’t press down too firmly or the peppers will tear.

Top & bake

Sprinkle the remaining ½ cup cheese over the stuffed peppers. Cover loosely with foil (spray the underside with oil to prevent sticking) and bake 15 minutes. Remove foil and bake 5–7 minutes more, until the cheese is bronzed and bubbling.

Rest & garnish

Let the peppers rest 5 minutes; this sets the filling so it doesn’t ooze when you lift them with tongs. Shower with fresh cilantro leaves, a squeeze of lime, and—if you dare—a whisper of flaky sea salt and sliced jalapeño.

Expert Tips

Roast vs. steam

Uncovered roasting caramelizes the pepper edges, adding a subtle char that mimics grilled peppers. If you prefer silky-soft skins, add 2 tablespoons water to the dish before covering tightly with foil.

Color-coded carbs

Red and yellow peppers are sweetest (3–4 g sugar per half), while green are grassy and lowest in carbs (2 g). Use a mix to balance flavor and keep sugars modest.

Freeze before cheese

Assemble through Step 6, wrap the entire dish in two layers of foil, and freeze up to 2 months. When ready to serve, thaw overnight, add cheese, and bake as directed, adding 10 extra minutes.

Crispy topping hack

Swap the final 2 minutes of baking to a high broil for a lacquered cheese crust. Watch closely—chipotle cheeses scorch fast.

Variations to Try

Meat-lover’s mix: Replace half the beans with cooked chorizo or seasoned ground turkey for an omnivorous twist.
Green chile style: Swap chipotle for roasted Hatch chiles and use Monterey Jack. Add a crushed pork-rind topping for crunch.
Mediterranean remix: Sub black beans for cannellini, add chopped spinach, sun-dried tomato, and finish with feta.
Breakfast peppers: Stir ½ cup scrambled eggs into the filling and serve with a drizzle of salsa verde.
Quinoa boost: If you’re not watching carbs, swap the cauli-rice for cooked quinoa for a nuttier bite.

Storage Tips

Refrigerator: Cool peppers completely, transfer to an airtight container, and refrigerate up to 5 days. Reheat single portions in the microwave for 90 seconds, or warm the whole dish covered at 350 °F for 15 minutes.

Freezer: Wrap each cooled pepper half in plastic wrap, then foil; freeze in a zip bag up to 2 months. Thaw overnight in the fridge and reheat as above.

Make-ahead filling: The bean mixture can be stirred together and stored 3 days ahead. Stuff fresh par-roasted peppers when you’re ready to bake.

Frequently Asked Questions

Absolutely. Green peppers are lowest in sugar and give a pleasantly bitter counterpoint to the spicy filling. Add an extra pinch of sweetener (monk fruit or 1 tsp maple) to the filling if you prefer balance.

Roasting the empty halves for 10 minutes drives off excess moisture. Also, squeeze thawed frozen cauliflower rice in a towel until very dry before mixing.

Yes—every ingredient is naturally gluten-free. If you add Worcestershire or hot sauce, double-check labels for hidden malt vinegar.

Totally. Pre-cook pepper halves cut-side-down on a medium grill for 6 minutes, flip, stuff, top with cheese, close the lid, and grill indirect 8–10 minutes until cheese melts.

One stuffed pepper half (using red pepper and black soybeans) contains 12 g net carbs. Standard black beans bump it to 17 g—still low-carb for most plans.

Yes—use two dishes and rotate halfway through baking. The filling scales perfectly; just don’t mound higher than ¾ cup or the peppers topple.

Spicy Black Bean Stuffed Peppers for Low-Carb Dinner

Why This Recipe Works

Ingredients You'll Need