Ingredients
2
tablespoons olive or vegetable oil
2
large onions, chopped (2 cups)
4
medium carrots, chopped (2 cups)
4
cups sliced mushrooms
2
medium green bell peppers, chopped (2 cups)
4
cans (14 1/2 ounces each) diced tomatoes with basil, garlic and oregano, undrained
2
cans (15 ounces each) tomato sauce
2
cans (6 ounces each) Italian-style tomato paste
1
tablespoon sugar
1
teaspoon salt
1
teaspoon fennel seed, crushed, if desired
24
ounces uncooked spaghetti
Grated Parmesan cheese, if desired
Preparation
Heat oil in 10-inch skillet over medium-high heat. Cook onions and carrots in oil 3 to 4 minutes, stirring frequently, until crisp-tender. Stir in mushrooms and bell peppers.
Spoon vegetables into 4- to 6-quart slow cooker. Stir in remaining ingredients except spaghetti and cheese.
Cover and cook on low heat setting 8 to 10 hours.
Cook and drain spaghetti as directed on package. Serve sauce over spaghetti. Sprinkle with cheese.