One Skillet Cheesy Yellow Squash Casserole

Ingredients:
1 tablespoon olive oil
1 tablespoon butter
4 medium yellow summer squash, sliced in 1 inch cubes
1 yellow onion, chopped
3 celery stalks, chopped
Slap Ya Mama Cajun Seasoning or salt and pepper to taste
½ teaspoon garlic powder
½ teaspoon onion powder
½ cup grated parmesan cheese
1 ½ cups shredded sharp cheddar
½ cup sour cream
½ cup of good salsa
1 sleeve Ritz crackers, crushed medium to fine

Directions:
Preheat the oven to 350 degrees F.  Heat the oil and butter in a large cast iron skillet over medium heat.  Saute the squash, onion, celery and dry seasoning ingredients until soft.  When done, remove from heat and stir in the parmesan, 1 cup of the cheddar, sour cream and salsa. Taste and add more seasoning if needed.
Mix cracker crumbs and the remaining ½ cup of cheddar together and sprinkle evenly over the top. Bake for 15 minutes or until the top is golden and bubbly.