Slow Cooker Lasagna Soup - A Meal Prep Soup!

Ingredients

• 2 cloves garlic
• 1/2 yellow onion
• 6 oz frozen spinach
• 1 # ground beef
• 8 oz lasagna noodles
• 30 oz beef broth
• 30 oz crushed tomatoes
• 2 T Italian seasoning
• 1/2 tsp salt
• 1 T olive oil
• 1 cup ricotta ((optional))