Open the practical worksheet for this guide ↓

This dinner is deliberately loose and spoonable. It avoids the expectation that every grain must absorb exactly the same amount of liquid before the lid comes off. Rice cooks in a tomato broth, and canned, already cooked lentils join near the end. The useful skill is watching the grain and the liquid separately: tender rice can sit in a little broth, while firm rice needs more cooking even if the pot looks thick.

Illustrative recipe: this recipe has not been physically tested for publication. It makes approximately two generous bowls. Allow 10–15 minutes preparation and approximately 25–35 minutes cooking. Rice varieties and pans differ; follow package guidance where relevant, adjust water and check the grains for doneness.

Ingredients and equipment

  • 120 g ordinary long-grain white rice, not quick-cooking rice
  • One 400 g can chopped tomatoes
  • One 400 g can cooked brown or green lentils, drained and rinsed, about 240 g drained
  • One small onion, finely chopped
  • One tablespoon olive oil
  • 500 ml water to start, plus additional hot water as needed
  • Half a teaspoon ground cumin or mild paprika
  • Salt and black pepper to taste
  • A small handful chopped parsley, optional

Choose a medium saucepan with room to stir. A very wide pan loses water faster; a small pan risks bubbling over once the rice expands. Keep a kettle of hot water available so a dry pot can be adjusted without adding a large cold quantity. Read the full method using the recipe reading guide before starting the onion.

Build the pot in stages

  1. Warm the oil over medium heat. Cook the onion for about six minutes, stirring, until softened. Lower the heat if the edges brown before the pieces soften.
  2. Stir in the spice for about 20 seconds. Add tomatoes and 500 ml water. Bring to a simmer, breaking up any large tomato pieces with a spoon.
  3. Add the rice and stir well. Keep at a gentle simmer with the lid partly covering the pot. Stir occasionally, reaching the bottom so rice does not gather and stick.
  4. Begin checking around the lower end of the rice packet’s cooking time. Taste a cooled grain: it should have no hard or chalky center. If firm, continue cooking. If liquid is disappearing before the rice is tender, add hot water in 50–100 ml portions.
  5. Once the rice is nearly tender, stir in the drained cooked lentils. Simmer until the rice is done and the lentils are thoroughly hot, usually several more minutes.
  6. Let the pot stand briefly off the heat. Adjust seasoning and loosen with a little hot water if it has thickened more than you want. Add parsley, if using, and serve promptly.

Use a two-question check

What you find Next action
Firm rice, little liquid Add hot water; continue a gentle simmer.
Tender rice, plenty of broth Serve as a loose bowl or simmer briefly uncovered.
Tender rice, thick texture Stir in a small splash of hot water.

A worked example: at 18 minutes the spoon leaves a thick trail, but a grain still has a firm center. Add 75 ml hot water and continue checking. Reducing the heat alone would protect the bottom but would not replace the missing liquid. Conversely, once rice is tender, another long simmer can turn it softer than intended. A little extra broth is acceptable in this style of dish.

Keep substitutions realistic

Use only already cooked lentils in this version. Dry lentils introduce a second cooking schedule, and simply swapping equal weights would change the liquid and timing. Brown rice also needs a different schedule, so choose a recipe designed for it rather than extending this one blindly. For a thicker vegetable dinner without rice, try the sweet potato and black bean skillet.

Tomato brands vary in acidity and consistency. Season after the lentils are hot, since their packing liquid has been removed and the pot may need a small adjustment. Parsley is optional; buying a large bunch for one garnish is unnecessary. The flexible shopping list helps assign the remainder to another meal.

Handle rice leftovers deliberately

Serve rice promptly. If keeping some, cool quickly in small portions, refrigerate within one hour and use within 24 hours. Reheat once only, until steaming hot throughout; do not rely on reheating to correct poor storage. These steps follow NHS rice and grains guidance.

Put this guide to work

Rice pot liquid and grain check

Treat grain tenderness and liquid quantity as two separate observations.

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  1. Record the rice type and confirm that the lentils are already cooked, canned and drained.

  2. For the illustrative two-bowl pot: 120 g rice, 400 g tomatoes, about 240 g drained lentils and 500 ml water.

  3. Cool and taste a grain near the packet timing range. Note firm or tender rather than only the elapsed minutes.

  4. Choose add 50–100 ml hot water, continue gently, serve loose, or reduce briefly once grains are tender.

  5. Serve promptly. If keeping rice, plan small portions and prompt refrigeration according to the linked guidance.

Worked example

Illustrative example, not physically tested: at 18 minutes the pot looks thick but a grain is firm. Add 75 ml hot water and continue checking. Add the cooked lentils near the end; serve when grains are tender and lentils hot. A little broth is intentional.

NHS rice guidance: cool rice quickly and refrigerate within one hour; use within 24 hours; reheat once only until steaming hot throughout. See the linked source in the article.

Tamarind & Yam — A Spoonable Tomato, Lentil and Rice Pot
https://tamarindoyam.com/tomato-lentil-rice-pot/