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2. Sauté Onion and Garlic
Using the same pan, sauté diced onions and garlic until they’re fragrant and translucent. This step enhances the flavor base for the sauce.
3. Build the Flavorful Sauce
Stir in marinara sauce, diced tomatoes with juice, basil, oregano, salt, and pepper. Simmer for a few minutes to allow the spices to meld. This thick, herby sauce will act as the perfect base for your lasagna pasta.
4. Layer Ingredients in the Slow Cooker
Lightly grease the inside of your slow cooker with olive oil. Begin by adding a small amount of the sauce mixture to the bottom. Then, create layers using:
A scoop of uncooked penne pasta
A generous layer of sauce
A sprinkling of mozzarella cheese
Dollops of ricotta cheese
Repeat these layers, finishing with a top layer of sauce and mozzarella.
5. Cook Low and Slow
Cover and cook on LOW for 4-6 hours. Cooking times may vary depending on your slow cooker model. Pasta should be al dente and cheese fully melted and bubbly.
Tip: Avoid overcooking — check pasta texture at the 4-hour mark to prevent it from becoming mushy.
6. Garnish and Serve
Let the dish sit uncovered for a few minutes after cooking. This helps it set slightly for easier serving. Garnish with fresh basil and a sprinkle of grated Parmesan, if desired.
Serve hot and enjoy the delicious layers of cheesy, hearty lasagna flavor in every bite.
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