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If your Sunday afternoons have started to smell like garlic, paprika, and bubbling cheddar, you can blame this casserole. I created this Keto Cheesy Broccoli and Chicken Bake two years ago when my husband and I were both working crazy hospital shifts and needed something that would:
- Keep us full during 12-hour days
- Reheat like a dream in the microwave at 3 a.m.
- Stay under 6 g net carbs per serving
- Actually taste cheesy and indulgentânot like âdiet foodâ
Weâve made it 40-plus times since, tweaking the spice blend and cheese ratios until our neighbor (a self-proclaimed carb addict) begged for the recipe. Whether youâre feeding a family, stocking a dorm fridge, or simply want a no-fuss keto dinner that slices into neat, protein-packed squares, this bake has your back.
Why This Recipe Works
- One-pan wonder: Steam the broccoli in the same baking dish while the chicken searsâfewer dishes, happier you.
- Freezer-friendly squares: Cut into 8 meal-prep containers; freeze up to 3 months without texture loss.
- Hidden veggie boost: Finely diced zucchini melts into the cheese sauceâkids never notice.
- Protein powerhouse: 38 g protein per serving keeps blood-sugar spikes away and cravings at bay.
- Flexible cheese blend: Use all cheddar or mix in pepper jack for kickârecipe scales easily.
- Crunch without crumbs: A sprinkle of roasted pecans on top adds keto-approved crunch instead of breadcrumbs.
Ingredients You'll Need
Great meal-prep starts at the grocery store. Below are the non-negotiables plus my favorite swap-ins so you can shop once and cook twice.
Protein
- 1 ½ lb boneless skinless chicken thighs â juicier than breast after reheat; trim visible fat but keep some for flavor.
- Substitute: 1 Âź lb breast or 1 lb cooked rotisserie chicken (skip the sear step).
Vegetables
- 4 cups broccoli florets (about 2 medium heads). Buy pre-cut if youâre time-starved; fresh beats frozen for texture.
- 1 cup zucchini, finely diced â the stealth nutrient booster.
- 3 green onions for a pop of color and gentle bite.
Cheese & Dairy
- 1 ½ cups shredded sharp cheddar â aged 12 months minimum for maximum meltability.
- ½ cup shredded mozzarella gives those Instagram cheese pulls.
- 4 oz cream cheese, softened â creates a velvety sauce that wonât break.
- â cup heavy cream â thins the sauce without carbs.
Pantry & Seasonings
- 2 tsp smoked paprika for subtle grill flavor.
- 1 tsp garlic powder, 1 tsp onion powder, ½ tsp dried thyme â the holy trinity of weeknight poultry seasoning.
- ½ tsp xanthan gum (optional) â stabilizes sauce if you plan to freeze.
- S&P, avocado oil, Âź cup pecan pieces.
How to Make Keto Cheesy Broccoli and Chicken Bake for Meal Prep
Preheat & Prep Pan
Heat oven to 400 °F (204 °C). Lightly grease a 9Ă13-inch ceramic or glass baking dish. Ceramic retains heat beautifully and prevents the dreaded âcold middleâ when reheating.
Sear the Chicken
Pat thighs dry; season both sides with 1 tsp salt, 1 tsp smoked paprika, garlic powder, onion powder, and thyme. Heat 1 Tbsp avocado oil in a large skillet over medium-high. Sear chicken 3 min per side until goldenâit will finish in the oven. Transfer to a plate to rest (juices re-absorb) then dice into ž-inch cubes.
Steam Broccoli in the Same Dish
Place broccoli in the baking dish with 2 Tbsp water, cover tightly with microwave-safe plate, and microwave 3 min. This jump-starts cooking so the florets finish tender, not mushy. Drain any remaining water.
Build the Cheese Sauce
In a saucepan over medium, melt cream cheese with heavy cream, stirring until smooth. Whisk in 1 cup cheddar and all the mozzarella until melted. Add remaining ½ tsp smoked paprika, ½ tsp salt, and xanthan gum. Simmer 1 min until thick enough to coat a spoon.
Combine & Coat
Add diced chicken, zucchini, and green onions to the baking dish with broccoli. Pour cheese sauce over everything; fold gently with a spatula until all pieces are coated. Spread into an even layer.
Top & Bake
Sprinkle remaining ½ cup cheddar and pecan pieces over the top. Bake uncovered 18-20 min until edges are bubbling and the top is mottled golden brown. Broil 1 min for extra color if desired.
Rest for Clean Slices
Let stand 10 min; sauce thickens as it cools, making meal-prep portions neater.
Portion & Store
Cut into 8 rectangles. Lift each with a spatula into glass containers. Refrigerate up to 5 days or freeze up to 3 months.
Expert Tips
Donât Over-Bake
Chicken thighs forgive more than breast, but 20 min is the sweet spot. Overcooking dries the cheese sauce.
Flash-Cool Before Freezing
Place hot containers in a shallow ice bath 15 min to drop temp quicklyâprevents ice crystals.
Revive with Cream
When reheating from frozen, drizzle 1 tsp cream over the top before microwaving 2 min for a just-baked texture.
Nut Swap
Allergic to pecans? Use slivered almonds or crushed pork rinds for the same crunch.
Double the Spice Rub
Make extra spice mix; store in a jar. Rub on salmon or shrimp later in the week.
Scale for Crowds
Doubles perfectly in a 3-qt (9Ă13) dishâjust increase bake time 5 min.
Variations to Try
- Bacon Ranch: Omit paprika; add 1 Tbsp ranch seasoning and ½ cup crumbled cooked bacon.
- Mexican: Swap cheddar for pepper jack; add 1 cup cauliflower rice and 1 tsp cumin. Top with pico de gallo.
- Buffalo: Replace heavy cream with â cup Frankâs RedHot; stir 2 Tbsp blue cheese into the sauce.
- Dairy-Free Keto: Use coconut cream and nutritional yeast (1:1 by volume) plus 1 Tbsp tapioca starch for stretch.
- Veggie Heavy: Stir in 1 cup sautĂŠed mushrooms or spinach for added fiber without carbs.
Storage Tips
Refrigerate: Cool completely; store portions in airtight glass 2-cup containers 4-5 days.
Freeze: Wrap each square in parchment, then foil; place in zip bag. Keep 3 months. Thaw overnight in fridge or microwave from frozen 3-4 min at 70% power.
Reheat: Microwave 60-90 sec with a damp paper towel. Oven 350 °F 10 min (preferred for crusty top).
Meal-Prep Power: Pair with a side salad of arugula + lemon vinaigrette for extra greens; macros stay keto.
Frequently Asked Questions
Keto Cheesy Broccoli and Chicken Bake for Meal Prep
Ingredients
Instructions
- Preheat oven: 400 °F. Grease a 9Ă13-inch baking dish.
- Season & sear chicken: Combine 1 tsp salt, paprika, garlic powder, onion powder, and thyme. Coat thighs. Heat avocado oil in skillet; sear 3 min per side. Rest 5 min, dice.
- Steam broccoli: Microwave broccoli in dish with 2 Tbsp water, covered, 3 min. Drain.
- Make cheese sauce: Melt cream cheese with heavy cream. Whisk in 1 cup cheddar, mozzarella, remaining paprika, and xanthan gum; simmer 1 min.
- Assemble: Toss chicken, zucchini, and green onions with broccoli. Pour sauce over; mix. Top with remaining ½ cup cheddar and pecans.
- Bake: 18-20 min until bubbling and golden. Broil 1 min for extra color. Rest 10 min before slicing into 8 squares.
Recipe Notes
For meal prep, cool completely before refrigerating or freezing. Reheat with a splash of cream to keep the sauce silky.
