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Are you trying to blast belly fat? Trimming down your waistline typically involves a combination of factors, primarily diet and exercise. When it comes to food, some are better than others for fat burning, says Tara Collingwood, MS, RDN, CSSD, LD/N, ACSM-CPT, also known as The Diet Diva. The Board-Certified Sports Dietitian and co-author of Flat Belly Cookbook for Dummies recently revealed to us her go-to foods for fat loss. Here are 7 everyday foods that shrink hanging belly fat fast.

Avocados

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What is the first food Collingwood recommends to shrink belly fat? Avocados. “Loaded with healthy fats (monounsaturated), avocados help regulate blood sugar, reduce cravings, and keep you feeling full longer, aiding in belly fat reduction,” she says. There are lots of ways to enjoy an avocado. You can add them to a salad, mash them up and make avocado toast, or eat them as a side with breakfast, lunch, or dinner. However, try not to overdo it, as they do have a decent amount of calories.

Eggs

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Eggs are one of the most versatile foods, and a great source of nutrients if you are trying to lose weight. “Packed with high-quality protein, eggs promote satiety, stabilize blood sugar, and help your body burn more calories for digestion (the thermic effect of food),” says Collingwood. They also fill you up fast. Again, they do have a decent amount of fat and calories, so consider mixing an egg or two with egg whites to add protein without much caloric impact.

Berries

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Berries, including blueberries, strawberries, and raspberries, are another excellent food for shrinking belly fat, according to Collingwood. “Berries are low in calories and high in fiber and antioxidants, which fight inflammation and support fat loss, especially around the belly,” she says. There are many ways to enjoy berries, either fresh or frozen. You can eat them on their own, add them to yogurt or cereal, or blend them in a smoothie.

Olive Oil

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Olive oil may be fatty, but it’s the good kind and will help you burn fat. It’s a “healthy fat that helps control appetite and supports fat metabolism,” says Collingwood. “A drizzle on salads or in cooking can make a difference without overloading calories.”

Nuts

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Nuts are another healthy fat to help you burn fat. This includes almonds, walnuts, and pistachios. “Rich in healthy fats and protein, nuts help curb cravings, stabilize blood sugar, and promote a healthy metabolism. Just stick to a small handful per day!” says Collingwood. You can eat a handful of nuts as a snack, toss them in your salad, or use them when cooking your favorite meals.

Beans and Lentils

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Beans, including white, black, and pinto, and lentils, are another belly fat-blasting food, according to Collingwood. “High in fiber and protein, they stabilize blood sugar and improve digestion, helping you feel full longer,” she says. They will also help you feel full faster. You can serve them as a side dish or even add them to a salad for an extra dose of nutrients.

Leafy Greens

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Another food that will help burn belly fat? Leafy greens. Collingwood recommends spinach, kale, and arugula. “Low-calorie, nutrient-dense, and high in fiber—greens aid digestion, reduce bloating, and help create a calorie deficit for fat loss,” she says. Make them into a salad, sauté them as a side dish, or add them to your egg scramble for an extra dose of yum.

Everyone I know shops at Costco, even nutritionists and dieticians. While the warehouse sells a lot of high-calorie items, including almost everything from the famous bakery, there are plenty of healthy options too. My go-to nutrition expert, Tara Collingwood, MS, RDN, CSSD, LD/N, ACSM-CPT, a Board Certified Sports Dietitian and co-author of the Flat Belly Cookbook for Dummies, is one of the millions of Costco members who shop at the store. She recently shared her bulk shopping list with me. “I like this list overall because it focuses on nutrient-dense, minimally processed foods, which are exactly what we look for when supporting weight loss. But it’s important to remember: no single food causes weight loss. These foods work because they help with satiety, blood sugar control, and overall diet quality. Even healthy foods like nuts, almond flour, and seeds are calorie-dense, so portion size still matters. Weight loss ultimately comes down to overall calorie balance, not just choosing ‘healthy’ foods,” she says. “For weight loss, I focus on foods that are high in protein, fiber, and healthy fats because they help keep you full longer and reduce overeating. Buying these in bulk can also make it easier to stick with healthy habits.” Here are 9 Costco bulk foods dieticians swear by for weight loss.

Kirkland Organic Greek Yogurt

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Kirkland Organic Greek Yogurt is always recommended by health and fitness experts. “High in protein, which helps with fullness and preserving lean muscle during weight loss,” she says. “Note: It’s not ‘zero sugar’ because it contains natural lactose, but it is zero added sugar.” An added bonus? It is creamy and delicious.

Kirkland Shelled Hemp Hearts

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She is also a fan of Kirkland Shelled Hemp Hearts. “Provide healthy fats, some protein, and minerals. Fats help with satiety, but portion size matters since they’re calorie-dense,” she says.

Wild Caught Sockeye Salmon

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Wild Caught Sockeye Salmon is another one of her go-to buys. “Rich in protein and omega 3 fatty acids, which may support heart health and help with satiety. A great option for balanced meals,” she says. And, at Costco you will save big by buying it in bulk.

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Kirkland Almond Flour

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If you like to cook, consider Kirkland Almond Flour. “Lower in carbs than traditional flour and contains healthy fats and some fiber, but it’s still calorie-dense, so it’s not inherently ‘weight loss friendly’ unless portions are controlled,” says Collingwood.

Rotisserie Chicken

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Several shoppers buy more than one of Costco’s famously cheap $5 rotisserie chicken. “A convenient, high-protein option that can make meal prep easier. Removing the skin can reduce saturated fat and calories if needed,” she says.

Kirkland Frozen Organic Berries

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Another item that most health experts buy, especially for adding to protein shakes and smoothies? Kirkland Frozen Organic Berries. “High in fiber and antioxidants with no added sugar. Fiber helps with fullness and blood sugar control, making them excellent for weight management,” she says.

Kirkland Boneless Chicken Breast

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And, Kirkland Boneless Skinless Chicken Breast has been a warehouse bestseller for decades. “A staple lean protein that is high in protein, low in fat, and very versatile. Supports satiety and muscle maintenance,” she says.

Kirkland Walnuts

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Kirkland Walnuts are one of the most popular nuts. “Contain heart-healthy fats and some fiber, which can help with fullness. Like all nuts, they’re nutritious but calorie-dense, so portion awareness is key,” says Collingwood.

Season Brand Sardine Fillets

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Season Brand Sardine Fillets are another heart-healthy option. “Packed with protein, omega-3s, and calcium (especially if bones are included). Very nutrient-dense and satisfying,” says Collingwood.