Vegetable Lasagna

Ingredients

• 5 plum tomatoes, chopped
• 1 1/2 cups sliced fresh mushrooms
• 1 medium sweet red pepper, julienned
• 1 small yellow summer squash, cut into 1/4-inch slices
• 1 small zucchini, cut into 1/4-inch slices
• 1 medium carrot, shredded
• 1 small onion, chopped
• 3 garlic cloves, minced
• 1/4 cup olive or vegetable oil
• 1 can (12 oz.) tomato paste
• 1 cup vegetable broth
• 2 Tbsp. brown sugar
• 2 tsp. dried oregano
• 2 tsp. dried basil
• 1 tsp salt
• 1/2 tsp. dried thyme
• 1/4 tsp. pepper
• 1 egg
• 1 cup ricotta cheese
• 6 lasagna noodles, cooked and drained
• 1 cup (4 oz.) shredded mozzarella cheese
• 1/4 cup shredded Parmesan cheese
• 2 Tbsp. grated Romano cheese
• 2 tsp. Italian seasoning