1 pound/about 500gr ground beef
¼ cup chopped onion
1 stalk celery, chopped
1 clove garlic, peeled and minced /optional
¼ cup sun-dried tomatoes packed in garlic oil, snipped or diced*
¾ cup tomato sauce
Sugar substitute equal to 1 teaspoon sugar
1 ½ teaspoons white vinegar
1 ½ teaspoons Worcestershire sauce
½ teaspoon dry mustard
½ teaspoon salt
1/8 teaspoon black pepper
2 cups shredded cheddar cheese
3 red bell peppers, halved lengthwise and seeded
1.Preheat oven to 350º F/180C. Grease a baking pan or dish.
2.Cook the ground beef in a skillet until it starts to brown. Drain off extra fat and add onion, celery, and garlic (use an extra clove of garlic if sun-dried tomatoes are not packed in garlic-flavored oil). Add dried tomatoes and some of the garlic-flavored oil. Stir in all remaining ingredients except the cheese and red peppers. Simmer 10 minutes.
3.Stir half the cheese into the hamburger mixture.
4.Place peppers in greased baking dish and fill with the meat and cheese mixture. Top with remaining cheese.
5.Bake at 350º F/180C for 20 to 25 minutes until hot and bubbly and peppers are tender-crisp.