High-Protein Zucchini Beef Casserole
Zucchini rounds, beef, a cheese top – 50 minutes, one pan
This is a layered casserole, not pasta lasagna. Zucchini rounds stack with seasoned beef and cheese until the slice stands, like the plate in the photo. No noodles. Fifty minutes.
Six squares. Rest it before you cut or it slumps.
Bake: 28-30
Why you’ll love this pan
- 35g protein per square – dinner that holds you
- Only 7g net carbs – zucchini instead of pasta
- About 50 minutes, one 8×8 or 9×9
- Green zucchini layers, beef, gold cheese, like the photo
- No boxed noodles, no flour sauce
- Leftovers reheat for lunch
Health notes
- High protein: About 1 1/2 lb beef plus mozzarella and cheddar.
- Low carb: Zucchini rounds, no pasta.
- Six squares: One pan, six plates.
- Macros are per serving, not the whole pan.
Key element – salt and blot the zucchini, or the pan turns to soup
Zucchini is mostly water. Slice, salt, and blot both sides before you layer. After baking, rest 10 minutes so the square stands and the cheese stays on top, like the photo. Cut too soon and it slumps.
Mary The High Protein Recipes
High-Protein Zucchini Beef Casserole
- Prep20 min
- Total20 min
- Servings6 servings
- Calories380 kcal
Ingredients
Instructions
- Prep the zucchini. Heat oven to 375 F (190 C). Slice zucchini into 1/4-inch rounds. Lay on towels, salt both sides, rest 15 minutes. Blot hard until dry.
- Cook the beef. Brown beef, onion, and pepper 7 to 8 minutes. Add garlic 30 seconds. Stir in marinara, Italian seasoning, salt, and pepper. Simmer 3 minutes until thick, not watery. Cool 2 minutes. Stir in eggs and ricotta.
- Layer. In a greased 8×8 or 9×9 pan: zucchini, 1/3 of the beef, a handful of mozzarella. Repeat two more times so the green rounds show on the side, like the photo.
- Cheese top. Finish with the rest of the mozzarella and the cheddar so the top is covered.
- Bake and rest. Bake 28 to 30 minutes until the cheese is gold and bubbling. Rest 10 minutes. Cut into 6 squares. Scatter parsley. Serve, like the plate in the photo.
Notes & Tips
- Blot the zucchini twice. If it still feels wet, it will flood the pan.
- A thick beef mix is better than a thin one. Watery marinara makes soup.
- Three layers look like the photo. Two layers look thin.
- Rest 10 minutes. The square stands up and the cheese stays put.
- Broil 60 seconds at the end if you want darker spots on the cheese.
Variations & serving ideas
- Turkey: Same weight. Add 1 tsp oil so it browns.
- No pepper: Skip it. Tomato still gives the red flecks.
- Cottage only: Blend 1/2 cup cottage instead of ricotta.
- 9×13: Same recipe, slightly thinner. Bake 5 minutes less.
- Spicy: Add 1/2 tsp red pepper flakes to the beef and a pinch on top.
- Italian sausage: Swap half the beef for Italian sausage (no sugar).
- Mushroom: Saute 8 oz chopped mushrooms with the beef.
Storage
- Refrigerator: Up to 4 days (Reheat 15 minutes at 350 F)
- Freezer: Up to 2 months (Freeze squares; thaw overnight)
- Meal prep: 6 boxes (One square per box)
Nutrition Facts
Per serving · makes 6 servings
| Nutrient | Amount per serving |
|---|---|
| Calories | 380 kcal |
| Total fat | 22 g |
| Sodium | 640 mg |
| Total carbohydrate | 10 g |
| Fibre | 3 g |
| Protein | 35 g |
Nutrition values are approximate and vary with brands and portion sizes.
Frequently asked questions
Is this casserole keto-friendly?
Yes. About 7g net carbs per square with zucchini instead of pasta. Use a sugar-free marinara.
Why is it watery?
The zucchini was not salted and blotted, or the sauce was thin. Salt, rest, blot hard, and simmer the beef until thick.
Do I peel the zucchini?
No. The green skin is the stripe in the photo. Just slice and blot.
Rounds or long slices?
Rounds, like the photo. Long sheets work too if you salt and blot them the same way.
Why rest it before cutting?
The cheese sets and the layers hold. Cut at once and the square slumps. Rest 10 minutes.
Can I make it ahead?
Yes. Assemble, cover, and refrigerate up to 24 hours. Add 5 minutes to the bake.
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