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Overview

Morrones Rellenos

Stuffed Bell Peppers, Morrones Rellenos con Carne, Pimientos Rellenos

This morrones rellenos recipe fills sweet bell peppers with a savoury picadillo of ground beef, cooked rice, onion and tomato, tops them with mozzarella and parmesan, and bakes them standing in tomato sauce until the peppers are tender and the cheese is golden. Each pepper is a complete lunch on its own. One serving is about 450 g.

Bell peppers stuffed with meat and rice are a home dish across the Rio de la Plata, rooted in the Spanish pimientos rellenos that immigrants brought with them. In Uruguay the dish took the local morron — the big sweet pepper of the region — and a filling of ground beef and rice, the two staples of the Uruguayan kitchen, with cheese on top and tomato sauce in the dish. It is a family lunch, baked in one dish and served one pepper per person, and it is also the vegetarian version's starting point: the same peppers filled with rice, egg and cheese are a classic of Uruguayan home cooking too.

Pairs well with: Serve the peppers hot with white rice and a green salad

Provenance

Uruguay flag Uruguay

Montevideo Heritage

Latin America & Caribbean

Time Dedication

1h 20m

30m prep • 50m cook

Batch Yield

4 Servings

470 kcal per serving

1 serving ≈ 450 g

Technical Skill

Intermediate

Easy (Oven Baked)

Meal Timing & Digestive Fit

Breakfast

Not Advised

Lunch

Prime Metabolic Fit

Dinner

Ideal Hearty Main

Snack & Tea

Inappropriate

Occasions: Family lunch, Sunday lunch, winter meals, home cooking Cost: Low — about $2.50 per serving at home
Colourful bell peppers stuffed with seasoned minced beef and topped with melted golden cheese

Montevideo Heritage

Photo: A Healthier Michigan from Detroit, United States, CC BY-SA 2.0, via Wikimedia Commons

The Heritage Formulary

Measured Ingredients

Estimated cost: Low — about $2.50 per serving at home (USD)

Good morrones rellenos stand upright on the plate, with tender peppers, a juicy beef-and-rice filling and cheese that is golden, not burnt — never a collapsed pepper or a dry filling.

Execution Methodology & Culinary Technique

Step-by-Step Cooking Guide

Active 1h 20m
P

Cook the Rice and Prepare the Peppers

30 Mins

Cook the 120g of dry rice in salted water until just tender, about 12 minutes, then drain and spread it on a plate to cool — cool rice holds its shape in the filling instead of turning to mush. Meanwhile cut the tops off the peppers, pull out the seeds and white membranes, and brush the outsides lightly with a little of the olive oil. Stand the peppers upright in a baking dish.

Maestro Tip: Use rice cooked the day before if you have it — day-old rice is drier and makes a much better stuffing than hot, steaming rice.

  1. 1

    Cook and Cool the Rice

    15 Mins Boiling, about 100°C (212°F)

    Cook the 120g of dry rice in a pan of salted boiling water for about 12 minutes, until just tender. Drain it well and spread it on a plate to cool completely while you make the filling.

    Drain the rice well and cool it before it meets the beef — hot, wet rice makes the filling soggy and the peppers steam instead of bake.

    Done when: 330g of cooled, separate grains of rice, not a sticky clump.

  2. 2

    Brown the Beef Filling

    15 Mins Medium-high heat, about 190°C (375°F)

    Heat the olive oil in a large pan over medium-high heat. Cook the onion for 3 minutes until soft, then the garlic for 1 minute. Add the 350g of ground beef and cook, breaking it up, for about 6 minutes until browned all over. Stir in the chopped tomato and the oregano and cook for 3 minutes more until the mixture is thick. Take off the heat and stir in the cooled rice, half the mozzarella and the parsley, and season with the salt and pepper.

    Cook the beef until it is browned, not grey — browning is where the flavour comes from, and a grey, steamed mince makes a dull filling.

    Done when: A thick, dark filling that holds together when pressed with a spoon, with the beef cooked through.

  3. 3

    Stuff the Peppers

    10 Mins Room temperature

    Heat the oven to 180°C (350°F). Spoon the filling into the peppers, pressing it down gently and filling each one to just below the rim — the rice swells a little as it bakes. Stand the peppers upright in the baking dish and pour the 200g of tomato sauce around their bases. Scatter the remaining mozzarella and the parmesan over the top of each pepper, and set the pepper tops back on like lids if you like.

    Fill to just below the rim, not heaped above it — rice swells in the oven and an overfilled pepper spills its filling into the sauce.

    Done when: Four upright peppers, filled level, standing in tomato sauce with cheese on top.

  4. 4

    Bake Covered, Then Uncovered

    35 Mins 180°C (350°F)

    Cover the dish loosely with foil and bake for 20 minutes, then take the foil off and bake for 15 minutes more, until the peppers are tender when pierced with a knife, the cheese is melted and golden, and the centre of the filling reaches at least 71°C (160°F) on a thermometer.

    The foil first is what cooks the peppers through without drying them — uncovered from the start, the tops brown before the peppers soften.

    Done when: Tender peppers, golden bubbling cheese, and a filling at least 71°C (160°F) in the centre.

  5. 5

    Rest and Serve

    5 Mins Hot, about 75°C (170°F)

    Leave the dish to rest for 5 minutes so the filling sets and the peppers hold together when lifted. Serve one pepper per person, hot, spooning some of the tomato sauce from the dish over the top, with white rice and a green salad.

    Five minutes of rest is the difference between a pepper that stands up on the plate and one that slumps and spills.

    Done when: Hot peppers standing upright, sauce spooned over, ready to serve.

Finishing Touches & Plating

Rest the dish for 5 minutes, then serve one hot pepper per person, spooning the tomato sauce from the baking dish over the top, with white rice and a green salad on the side.

Nutritional Physiology & Benefits

Nutrition

Energy

470

kcal / serving

Protein

30g

Complete AA

Carbs

40g

Complex

Fats

22g

Healthy

Per serving (4 servings · 1 serving ≈ 450 g)
Energy470 kcal
Protein30 g
Carbohydrates40 g
Fat22 g
Fibre5.2 g
Sugar8.9 g
Sodium904 mg
Per 100g
Energy104 kcal
Protein6.6 g
Carbohydrates9 g
Fat4.8 g
Fibre1.1 g
Sugar2 g
Sodium201 mg

Nutrition values are estimated — calculated from USDA FoodData Central values for the listed ingredients.

Vitamins & minerals: Vitamin C and vitamin A (bell peppers and tomato), B vitamins and iron (beef), and calcium (mozzarella and parmesan).

A Complete Lunch in One Pepper

Each 450 g serving gives about 29.5 g of protein, 40.3 g of carbohydrate and 5.2 g of fibre — beef, rice, peppers and cheese in a single dish.

Rich in Vitamin C

The bell peppers and tomato are naturally rich in vitamin C, and the peppers keep their colour and bite because they are baked, not boiled.

Colourful and Comforting

Red and green peppers, golden cheese and red tomato sauce — a bright, warming plate that looks as good as it tastes.

Food Pairings

What to Eat With

To optimize nutrient absorption and elevate the sensory depth, pair with these authentic accompaniments:

Sides

White Rice

More rice on the side catches the tomato sauce the peppers bake in, and makes the meal go further for a hungry table.

Crusty Bread

Crusty bread mops up the tomato sauce in the baking dish, so none of it is wasted.

Vegetables

Green Salad

A simple green salad with a light dressing refreshes the palate between bites of the rich, cheesy filling.

Drinks

Uruguayan Red Wine

A glass of Uruguayan red wine, such as Tannat, stands up to the beef and tomato without overwhelming the sweet peppers.

Complete menu

Serve the hot morrones rellenos with white rice and a green salad, then a slice of torta de manzana to finish, for a full Montevideo lunch.

Digestive Guardrails

What NOT to Combine

To prevent digestive distress, sluggishness, or palate clash, avoid pairing the dish with these elements:

Undercooking the Beef Filling

Ground beef must reach 71°C (160°F) all the way through — the cheese can look done while the centre is still catching up, and undercooked mince can carry harmful bacteria. Check the middle of a pepper with a thermometer. This is general information, not medical advice.

Overfilling the Peppers

Rice swells as it bakes, so a pepper filled above the rim spills its filling into the sauce and loses its shape. Fill to just below the rim and press the filling down gently. This is general information, not medical advice.

General information only, not medical advice — consult a doctor for personal dietary decisions.

Who Should Eat It

Who Should Eat

  • General adultsA complete lunch in one pepper — one 450 g serving with a salad is a full plate for most adults.
  • ChildrenSweet peppers, beef and melted cheese are usually a hit with children — serve it warm, not hot, and cut the pepper into pieces for younger children.
  • ElderlySoft to chew once baked, but serve it warm and in one pepper — the sodium is about 905 mg a serving, so go easy on extra salt.
  • Pregnant womenA nourishing lunch with iron from the beef and vitamin C from the peppers, as long as the filling is cooked right through to 71°C (160°F) — ask your clinician if you are unsure.
  • Breastfeeding womenA warm, filling lunch between feeds, with about 29.5 g of protein a serving — one pepper is plenty.
  • AthletesA good recovery lunch after training — about 470 kcal with 29.5 g of protein and 40.3 g of carbohydrate per serving.
  • Weight gainAt about 470 kcal a serving with beef, rice and cheese, one pepper with rice on the side is an easy way to add energy to the day.
  • Weight lossA 450 g pepper is filling for 470 kcal, but the extra rice and bread on the side add up — one pepper with a salad is the lighter choice.

Health Conditions — Adjust or Avoid

Conditions

  • DiabetesAbout 40.3 g of carbohydrate a serving, mostly from the rice, so one pepper with a salad instead of extra rice is the safer choice; ask your clinician about a suitable serving.
  • High blood pressureSodium is about 905 mg a serving, mostly from the tomato sauce, the added salt and the cheeses — keep to one pepper and ask your clinician if you are unsure.
  • Kidney diseaseThe dish has about 29.5 g of protein a serving and is rich in potassium from the peppers and tomato; ask your clinician whether it fits your diet.
  • GoutBeef is a moderate-purine food, so one pepper is wiser than two; ask your clinician if you are unsure.
  • Stomach issuesA rich, baked dish with onion, garlic and tomato sauce — eat it warm, not hot, in a modest portion, and ask your clinician if symptoms persist.
  • Cardiovascular diseaseAbout 21.6 g of fat a serving, much of it from the beef and cheese, so keep the portion to one pepper and go easy on the bread; ask your clinician if you are unsure.
  • Fatty liverA rich beef, rice and cheese dish, so a modest portion with more salad and less extra rice is better than a large plate; ask your clinician if you are unsure.
  • Food allergiesContains milk (mozzarella and parmesan). No gluten, egg, peanut, tree nut, fish or shellfish.
  • Special therapeutic dietsThis is a hearty everyday lunch, not a therapeutic food; anyone on a special diet should ask their clinician before eating it.

If you have a medical condition, consult your doctor before changing your diet.

Storage & Use

Storage & Use

How to store
Cool completely, then keep in a sealed container with the sauce.
In the fridge
3 days in a sealed container; the peppers soften a little.
In the freezer
Up to 1 month; the peppers soften more on thawing.
How to reheat
Warm in the oven at 180°C (350°F) for 15 minutes, or in the microwave until steaming hot all the way through (at least 74°C / 165°F).
Freezing recommended
Only the stuffed peppers without cheese — up to 1 month.
Signs it has spoiled
A sour smell, a slimy surface, or any mould.

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