- 4 pounds yellow squash, sliced (1 pound of squash yields about 2 cups sliced, so you’d need about 8 cups)
- 4 Tbsp. butter, divided
- 1 large sweet onion, finely chopped
- 2 garlic cloves, minced
- 2 1/2 cups soft breadcrumbs, divided
- 1 1/2 cups shredded Parmesan cheese, divided
- 2 cups (8 oz.) shredded Cheddar cheese
- 1/2 cup chopped fresh chives
- 1/2 cup minced fresh parsley
- 1 cup sour cream
- 1 tsp. salt
- 1 tsp. pepper
- 2 large eggs, lightly beaten
- 1/4 tsp. garlic salt
In large skillet, cook squash, covered in boiling water, for 8-10 minutes or until tender. Drain well and remove squash from skillet; gently press squash between paper towels to take out remaining moisture and set aside. Then, in same large skillet, melt 2 Tbsp. butter over medium-high heat; add onion and garlic, and saute 5 to 6 minutes or until tender. Remove skillet from heat; stir in squash, 1 cup breadcrumbs, 3/4 cup Parmesan cheese, and the other remaining ingredients, except for the garlic salt. Spoon into a lightly greased 13×9-inch baking dish.
Melt remaining 2 Tbsp. butter and stir with remaining 1 1/2 cups breadcrumbs, 3/4 cup Parmesan cheese, and garlic salt. Sprinkle mixture evenly over the top of the casserole. (If you want, you can also sprinkle another 1/2 cup of Cheddar cheese on the top to make it extra cheesy.) Bake at 350 degrees for 35-40 minutes, or until set.
This makes 8-10 servings.