Ingredients
MEAT SAUCE
1 pound Italian sausage
1 large (1 cup) onion, chopped
1 small (1/2 cup) green bell pepper, chopped
2 teaspoons finely chopped fresh garlic
2 (24-ounce) jars pasta sauce

FILLING
1 (15-ounce) container ricotta cheese
3/4 cup grated Parmesan cheese
1 teaspoon Italian seasoning
1/2 teaspoon salt
1 (6-ounce) package (3 cups) fresh spinach leaves, chopped

NOODLES
12 no-cook lasagna noodles

CHEESE
12 (3/4-ounce) slices Land O Lakes® Deli 4 Cheese Italian Blend

Directions
Generously spray 6-quart slow cooker with no-stick cooking spray; set aside. 

Combine Italian sausage, onion, green pepper and garlic in 12-inch skillet; cook over medium-high heat, stirring occasionally, 6-10 minutes or until sausage is cooked through. Drain, if necessary. Add pasta sauce; mix well. 

Combine all filling ingredients in medium bowl until well mixed. 

Spoon 1/4 meat mixture (about 2 cups) into prepared slow cooker; top with 3 lasagna noodles (break to fit). Spread with 1/4 cheese filling (about 3/4 cup); top with 3 cheese slices. Repeat layers 2 more times. Top all with remaining noodles; remaining filling and remaining meat mixture. 

Cover; cook on Low heat setting 4-6 hours or High heat setting 2-4 hours, or until noodles are tender. 

Top with remaining 3 cheese slices. Let stand until cheese is melted.

Cut lasagna into pieces or wedges.