Round white ceramic casserole of zucchini cheese bake topped with lightly browned sharp cheddar, with one serving removed.

Zucchini Cheese Bake

The zucchini still has a little texture when it goes into the dish, because it will soften further in the oven. Sour cream gives the filling lift, and the cheddar turns the corners browned and irresistible.

This Zucchini Cheese Bake is creamy, cheesy, and baked until lightly golden with tender zucchini, sautéed onions, garlic, and fluffy sour cream filling layered throughout! Rich enough to feel comforting but light enough for summer suppers, it’s an easy casserole that pairs especially well with grilled meats, roast chicken, or fresh garden meals.

Betty Lou Gardner in a family archival photograph

Granny’s Kitchen Notes

From Betty Lou Gardner

I like the zucchini to still hold a little texture before it goes into the oven because it softens more than people expect while it bakes. The browned cheesy corners around the edge never last very long once supper starts.

How to Make Zucchini Cheese Bake

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Thinly sliced white onion and minced garlic sautéing in a 12-inch skillet until softened and lightly golden.
01

Cook the Onion and Garlic

Sauté the onion until softened and lightly golden, adding the garlic near the end so it stays fragrant.

Zucchini half-moons sautéing in a 12-inch skillet until barely tender and lightly browned in spots.
02

Cook the Zucchini

Sauté the zucchini until barely tender, browned in spots, and the skillet is nearly dry.

Glossy beaten egg whites being folded into the seasoned sour cream and egg-yolk mixture.
03

Prepare the Cream Mixture

Beat the egg whites to glossy stiff peaks and fold them gently into the seasoned sour cream mixture.

Sautéed zucchini and onion layered with the sour cream mixture and topped with shredded sharp cheddar before baking.
04

Layer and Bake

Layer the vegetables and cream mixture in the baking dish, top with sharp cheddar, and bake until set and lightly browned.

05

Serve Warm

Let the casserole rest briefly so the filling settles before serving.

Round white ceramic casserole of zucchini cheese bake topped with lightly browned sharp cheddar, with one serving removed.

Zucchini Cheese Bake

The zucchini still has a little texture when it goes into the dish, because it will soften further in the oven. Sour cream gives the filling lift, and the cheddar turns the corners browned and irresistible.

By Betty Lou Gardner

Prep20 minCook40 minTotal1 hr 10 minDifficultyEasy
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Ingredients

Scale

Scaling note: Scaling is withheld until recipe-specific quantities, method safety, and instruction synchronization are verified.

Vegetables

Cream Mixture

Topping

Instructions

  1. 1 tbsp vegetable oil, 1 garlic clove, 1 onion
  2. 1 tbsp vegetable oil, 1 garlic clove, 4 zucchini, ½ tsp salt
  3. 2 egg whites, 2 egg yolks, 1 cup sour cream, 2 tbsp flour, 2 tsp Worcestershire sauce, ½ tsp dry mustard, ¼ tsp ground red pepper
  4. zucchini mixture, cream mixture, ¾ cup cheddar

Nutrition (Approximate Per Serving)

Yield

6 servings — Serving size: About 1/6 of casserole

Some ingredients could not be modeled and may meaningfully change the totals. Treat these values as a rough estimate.

Calories
250
Carbohydrates
11.5 g
Protein
8.5 g
Fat
19 g
Saturated Fat
7.5 g
Cholesterol
100 mg
Sodium
360 mg
Fiber
2 g
Total Sugars
6 g

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