Pasta, California Avocado, Pancetta, Tomato, and Hot Pepper Pasta - California Avocados

Ingredients

• 1 1/2 lb. chopped onion
• 2 oz. unsalted butter
• 1/4 cup olive oil
• 1 lb. and 4 ounces pancetta, sliced 1/4-inch thick, cut in 1-inch, thin strips
• 3 quarts canned Italian tomatoes, chopped (with juice)
• 4 small, dried hot red pepper, chopped finely
• As needed Salt, as needed
• 6 lb. penne or other short pasta
• 8 oz. grated Parmesan
• 4 oz. grated Pecorino Romano
• 14 California Avocados
• 2 Tbsp. lemon juice