Want your body to actually use those vitamins packed into colorful veggies? Here’s a simple kitchen trick: add a serving of peanut butter. The science is straightforward — vitamins A, D, E, and K dissolve in fat, not water. That means they need some healthy fat present in your meal to be efficiently absorbed through your gut and into your system.

Peanut butter is a powerhouse: it offers a healthful combo of monounsaturated and polyunsaturated fats. These fats help create little droplets called micelles in your digestive system that wrap up fat-soluble vitamins and move them across your intestinal lining (source: Harvard T.H. Chan School of Public Health).

Bell peppers, for example, are loaded with vitamin A and E precursors, but without a source of fat, your absorption might be less than half what it could be! Just a tablespoon of peanut butter with raw veggie sticks or stirred into a warm vegetable stir-fry can turn that around. Not a fan of bell peppers? Try green beans, broccoli, or roasted sweet potato slices — peanut butter works with them all.

One more bonus: peanut butter brings in a hit of protein and fiber, keeping you full and energized. So next time you’re chopping up veggies for a snack or side, grab a jar of peanut butter and know you’re getting more than just flavor. Your fat-soluble vitamins will thank you.