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Arroz Mamposteao

By Illyanna Maisonet

Published on September 29, 2025

Time

20 minutes

Yield

Serves 4 (more as a side)

Arroz Mamposteao

Ingredients

2 tablespoons extra-virgin olive oil 1 ripe plantain, peeled and cut into ½-inch pieces1 pound 90% lean ground beef ½ teaspoon table salt 1 teaspoon Worcestershire sauce 2 cups Arroz Blanco, cold2 cups Habichuelas Guisadas, coldSliced avocado

Before You Begin

This recipe was developed using leftover rice from our Arroz Blanco recipe, but any cooked white rice will work. 

Instructions

  1. Heat 2 tablespoons extra-virgin olive oil in 12-inch nonstick skillet over medium-high heat until shimmering. Add 1 ripe plantain, cut into ½-inch pieces, and cook, stirring frequently, until golden brown, 3 to 5 minutes. Add 1 pound ground beef and ½ teaspoon table salt and cook, breaking up meat with wooden spoon, until beef is no longer pink, 2 to 3 minutes. Add 1 teaspoon Worcestershire sauce and continue to cook until beef is cooked through, 2 to 3 minutes longer. Add 2 cups cold Arroz Blanco and cook, stirring constantly and breaking up rice clumps until mixture is heated through, 1 to 2 minutes. Add 2 cups cold Habichuelas Guisadas and gently fold into rice until combined and warmed through, 1 to 2 minutes. Season with salt to taste, and serve, passing sliced avocado separately.
Arroz Mamposteao
Photography by Steve Klise. Styling by Joy Howard.

Arroz Mamposteao

Headshot of Illyanna Maisonet
By Illyanna Maisonet

Published on September 29, 2025

Save

Time

20 minutes

Yield

Serves 4 (more as a side)

Ingredients

2 tablespoons extra-virgin olive oil
1 ripe plantain, peeled and cut into ½-inch pieces
1 pound 90% lean ground beef
½ teaspoon table salt
1 teaspoon Worcestershire sauce
2 cups Arroz Blanco, cold
Sliced avocado

Ingredients

2 tablespoons extra-virgin olive oil
1 ripe plantain, peeled and cut into ½-inch pieces
1 pound 90% lean ground beef
½ teaspoon table salt
1 teaspoon Worcestershire sauce
2 cups Arroz Blanco, cold
Sliced avocado

Ingredients

2 tablespoons extra-virgin olive oil
1 ripe plantain, peeled and cut into ½-inch pieces
1 pound 90% lean ground beef
½ teaspoon table salt
1 teaspoon Worcestershire sauce
2 cups Arroz Blanco, cold
Sliced avocado

Why This Recipe Works

Arroz mamposteao (“mom-post-yeow”) is the classic Puerto Rican merger of leftover rice and stewed beans, often with additions such as meat, sweet plantains, and pumpkin that turn it into a whole new, even heartier dish in about 20 minutes. The sofrito-laced beans do most of the seasoning work, so all we did was brown bite-size chunks of plantain and then sauté some ground beef with Worcestershire sauce to enhance their respective sweetness and savoriness; we then gently stirred in the rice and beans to warm everything through.

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Before You Begin

This recipe was developed using leftover rice from our Arroz Blanco recipe, but any cooked white rice will work. 

Instructions

  1. Heat 2 tablespoons extra-virgin olive oil in 12-inch nonstick skillet over medium-high heat until shimmering. Add 1 ripe plantain, cut into ½-inch pieces, and cook, stirring frequently, until golden brown, 3 to 5 minutes. Add 1 pound ground beef and ½ teaspoon table salt and cook, breaking up meat with wooden spoon, until beef is no longer pink, 2 to 3 minutes. Add 1 teaspoon Worcestershire sauce and continue to cook until beef is cooked through, 2 to 3 minutes longer. Add 2 cups cold Arroz Blanco and cook, stirring constantly and breaking up rice clumps until mixture is heated through, 1 to 2 minutes. Add 2 cups cold Habichuelas Guisadas and gently fold into rice until combined and warmed through, 1 to 2 minutes. Season with salt to taste, and serve, passing sliced avocado separately.

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