Trisha yearwood's baked spaghetti

Ingredients

• 6 slices bacon
• 1 teaspoon minced garlic
• 1 cup chopped onion
• 1 cup chopped bell pepper
• 3 14.5-ounce cans diced tomatoes with liquid
• 1 2.25-ounce can sliced ripe black olives
• 1-2 tablespoons dried oregano
• 1 pound ground beef
• 12 ounces thin spaghetti
• 2 cups grated cheddar cheese
• 1 10-ounce can cream of mushroom soup
• ¼ cup water
• ¼ cup grated Parmesan cheese