This is one of our favorites for the holidays. It is really important that you use homemade bread crumbs. The only thing that I changed in this recipe was added a little extra sharp cheese. Someone said, theirs came out dry. I have made it for the past 2 years and each time came out perfect and moist like a casserole usually does in an oven.
Soft, white breadcrumbs are the secret to this classic casserole's tender, soufflé-like texture. To make fresh breadcrumbs, tear day-old slices of sandwich bread into pieces, and pulse several times in the food processor until coarse crumbs form.
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3 Hours, 40 Minutes
- 2 pounds yellow squash, sliced
- 2 pounds zucchini, sliced
- 1 large sweet onion, finely chopped
- 2 cups (8 oz.) shredded sharp Cheddar cheese
- 2 cups soft, fresh breadcrumbs
- 1 (8-oz.) container sour cream
- 2 large eggs, lightly beaten
- 1 1/2 teaspoons garlic salt
- 1/2 teaspoon freshly ground pepper
- 3/4 cup (3 oz.) freshly shredded Parmesan cheese
- 1. Cook first 3 ingredients in boiling water to cover in a Dutch oven 10 to 12 minutes or just until tender; drain well in a colander, gently pressing squash mixture against sides with a wooden spoon.
- 2. Stir together squash mixture, Cheddar cheese, and next 5 ingredients. Spoon into a lightly greased 6-qt. oval-shaped slow cooker. Sprinkle Parmesan cheese over top.
- 3. Cover and cook on LOW 2 1/2 to 3 hours or until center is set and edges are golden brown; uncover and cook 30 minutes. Let stand 10 minutes.
- Note: Yellow squash, zucchini, and onions may be cooked and drained as directed up to 2 days ahead. Cover and chill until ready to assemble casserole.
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