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Instant Pot Sweet and Sour Tempeh with Pineapple and Bell Peppers

By PanPotPlates Test KitchenReviewed by PanPotPlates Editorial TeamPublished Apr 29, 2026 · Updated May 12, 2026
Asian-Inspired 25 mins instantpotveganquickeasyhealthyfamily-friendlyglutenfreedairyfreemealprepflavorful

A quick, easy, and flavorful vegan Instant Pot recipe featuring protein-rich tempeh cooked with vibrant bell peppers and sweet pineapple chunks. This gluten-free, dairy-free, and healthy dish is perfect for weeknight dinners and meal prepping.

Instant Pot Sweet and Sour Tempeh with Pineapple and Bell Peppers
Prep 10 min
Cook 15 min
Total 25 min
Servings 4
Difficulty easy
Cuisine Asian-Inspired

Recipe Details

Prep10 min
Cook15 min
Total25 min
Servings4
Difficultyeasy
CuisineAsian-Inspired
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Ingredients

Servings 4
  • 1 (8 oz) package tempeh, cut into 1-inch cubes
  • 1 red bell pepper, sliced
  • 1 yellow bell pepper, sliced
  • 1 cup pineapple chunks (fresh or canned, juice reserved)
  • 1/2 cup pineapple juice (reserved from canned pineapple or fresh)
  • 1/4 cup rice vinegar
  • 3 tablespoons gluten-free soy sauce or tamari
  • 3 tablespoons brown sugar
  • 2 cloves garlic, minced
  • 1 tablespoon fresh ginger, grated
  • 1 tablespoon cornstarch mixed with 2 tablespoons cold water
  • 1 tablespoon vegetable oil
  • 2 green onions, sliced (for garnish)
  • 1 teaspoon toasted sesame seeds (optional garnish)
  • Cooked rice or cauliflower rice, for serving

Instructions

  1. Set the Instant Pot to 'Sauté' mode and heat the vegetable oil.
  2. Add the cubed tempeh and cook, stirring occasionally, until golden brown on all sides, about 5 minutes. Remove the tempeh and set aside.
  3. Add the minced garlic and grated ginger to the pot; sauté for 30 seconds until fragrant.
  4. In a bowl, whisk together the pineapple juice, rice vinegar, gluten-free soy sauce, and brown sugar until the sugar dissolves.
  5. Add the sauce mixture to the Instant Pot, then return the browned tempeh, sliced bell peppers, and pineapple chunks to the pot.
  6. Secure the Instant Pot lid and set the valve to sealing. Cook on Manual/Pressure Cook High for 3 minutes.
  7. When cooking time is complete, carefully perform a quick release of the pressure.
  8. Switch back to 'Sauté' mode and stir in the cornstarch slurry. Cook for 2-3 minutes, stirring constantly, until the sauce thickens to a glossy consistency.
  9. Taste and adjust seasoning if needed.
  10. Serve immediately over cooked rice or cauliflower rice, garnished with sliced green onions and toasted sesame seeds if desired.

Frequently Asked Questions

Reader questions and answers for this recipe will appear here.

Customize this Instant Pot Sweet and Sour Tempeh recipe to suit your tastes or pantry availability with the following ingredient swaps, keeping it vegan and gluten-free:

  • Protein: Substitute extra-firm tofu or seitan for tempeh for texture variation.
  • Vegetables: Use poblano or Anaheim peppers for milder spice, or swap bell peppers for snap peas or zucchini to add freshness.
  • Fruit: Replace pineapple chunks with mango or diced peaches for a different tropical sweetness.
  • Juice: Use orange juice or apple juice instead of pineapple juice for a unique twist.
  • Vinegar: Apple cider vinegar or white wine vinegar works well instead of rice vinegar.
  • Soy Sauce: Coconut aminos provide a soy-free, gluten-free option with a mild flavor.
  • Sweetener: Swap brown sugar with maple syrup or coconut sugar to keep it vegan-friendly.
  • Oil: Use avocado oil or light olive oil for a healthier fat source.
  • Thickener: Arrowroot powder or tapioca starch can replace cornstarch to keep it gluten-free.

These ingredient modifications maintain the recipe’s quick, easy, and healthy profile while fitting a range of dietary preferences.

Pan Or Pot Required

This recipe is specifically designed for the Instant Pot, providing a convenient and efficient one-pot meal solution. The Instant Pot serves as your sauté pan and pressure cooker, allowing you to brown the tempeh, sauté aromatics, and pressure cook the sweet and sour mixture all in one pot to lock in flavors.

Using the Instant Pot minimizes cleanup and speeds up cooking—ideal for busy weeknight dinners or meal prepping. Its precise temperature control and pressure cooking intensify the sweet and tangy flavors while keeping the tempeh and vegetables tender.

Leverage the Instant Pot’s sauté function to brown the tempeh and thicken the sauce, then switch to pressure cook mode to meld flavors quickly. No additional pans are needed, simplifying your cooking workflow.

If you don’t have an Instant Pot, a heavy-bottomed sauté pan or Dutch oven with a tight-fitting lid can work as alternatives, though cooking times may vary.

Cookware Size Guidance

A 6-quart Instant Pot is optimal for this recipe, giving enough space to sauté the tempeh and vegetables evenly and to pressure cook without overcrowding. This size ensures proper steam circulation for even cooking and browning. If using a smaller 3-4 quart Instant Pot, halve the recipe to prevent overflow and uneven cooking. Larger 8-quart models are compatible but may cause slightly more evaporation during sautéing. Overall, 6 quarts offers the best balance of cooking efficiency and flavor development for family-friendly servings or meal prep batches.

Cookware Swap Guidance

While this recipe shines in an Instant Pot, several cookware substitutions are possible tailored to PanPotPlates’ tags like quick, easy, and healthy:

  • Slow Cooker: Brown tempeh in a skillet, then combine all ingredients in a slow cooker. Cook low for 3-4 hours or high for 1.5-2 hours. Add cornstarch slurry before serving and simmer until sauce thickens.
  • One-Pan Skillet: Brown tempeh and aromatics in a deep skillet. Add sauce ingredients and simmer until peppers are tender and sauce thickens, stirring frequently.
  • Casserole: Sear tempeh and garlic on stovetop, transfer to oven-safe dish with vegetables and sauce. Cover and bake at 350°F (175°C) for 30-40 minutes. Stir in cornstarch slurry and heat on stovetop if needed.
  • Sheet Pan Roasting: Toss tempeh and peppers with the sauce base; roast at 400°F (200°C) for 20-25 minutes, stirring halfway. Finish in a skillet with cornstarch slurry to thicken sauce.

These alternatives keep the recipe vegan, family-friendly, and mealprep-ready while offering flexibility for your kitchen setup.

Leftovers Quality

This Instant Pot Sweet and Sour Tempeh recipe stores well as leftovers, maintaining bold flavors and a pleasant texture—ideal for meal prepping. Its gluten-free and dairy-free profile makes it a versatile healthy option for subsequent meals.

Storage: Cool leftovers completely; store in airtight containers in the refrigerator for up to 3-4 days. For longer preservation, freeze in freezer-safe containers or bags for up to two months. To maintain texture, freeze cooked rice or cauliflower rice separately from the tempeh mixture.

Reheating: Reheat gently to preserve flavor and texture: microwave on medium power in intervals, stirring between heating, or rewarm in a skillet with a splash of water or broth to keep sauce moist. Thaw frozen portions overnight in the fridge before reheating.

Following these tips ensures you enjoy this easy, nutritious Instant Pot sweet and sour vegan meal multiple times with minimal effort.

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